LibJS: Add ECMA-262 section/title/URL comments almost everywhere

As mentioned on Discord earlier, we'll add these to all new functions
going forward - this is the backfill. Reasons:

- It makes you look at the spec, implementing based on MDN or V8
  behavior is a no-go
- It makes finding the various functions that are non-compliant easier,
  in the future everything should either have such a comment or, if it's
  not from the spec at all, a comment explaining why that is the case
- It makes it easier to check whether a certain abstract operation is
  implemented in LibJS, not all of them use the same name as the spec.
  E.g. RejectPromise() is Promise::reject()
- It makes it easier to reason about vm.arguments(), e.g. when the
  function has a rest parameter
- It makes it easier to see whether a certain function is from a
  proposal or Annex B

Also:

- Add arguments to all functions and abstract operations that already
  had a comment
- Fix some outdated section numbers
- Replace some ecma-international.org URLs with tc39.es

52 files changed, 480 insertions, 101 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp b/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
index 233de0db29..3985d03ed4 100644
--- a/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
@@ -22,16 +22,20 @@ void AggregateErrorConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 20.5.7.2.1 AggregateError.prototype, https://tc39.es/ecma262/#sec-aggregate-error.prototype
     define_property(vm.names.prototype, global_object.aggregate_error_prototype(), 0);
+
     define_property(vm.names.length, Value(2), Attribute::Configurable);
 }
 
+// 20.5.7.1.1 AggregateError ( errors, message ), https://tc39.es/ecma262/#sec-aggregate-error
 Value AggregateErrorConstructor::call()
 {
     return construct(*this);
 }
 
-// 20.5.7.1 The AggregateError Constructor, https://tc39.es/ecma262/#sec-aggregate-error-constructor
+// 20.5.7.1.1 AggregateError ( errors, message ), https://tc39.es/ecma262/#sec-aggregate-error
 Value AggregateErrorConstructor::construct(Function&)
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/Array.cpp b/Userland/Libraries/LibJS/Runtime/Array.cpp
index d8ab3b4236..232a5a42e2 100644
--- a/Userland/Libraries/LibJS/Runtime/Array.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Array.cpp
@@ -12,9 +12,10 @@
 
 namespace JS {
 
-// 10.4.2.2 ArrayCreate, https://tc39.es/ecma262/#sec-arraycreate
+// 10.4.2.2 ArrayCreate ( length [ , proto ] ), https://tc39.es/ecma262/#sec-arraycreate
 Array* Array::create(GlobalObject& global_object, size_t length)
 {
+    // FIXME: Support proto parameter
     if (length > NumericLimits<u32>::max()) {
         auto& vm = global_object.vm();
         vm.throw_exception<RangeError>(global_object, ErrorType::InvalidLength, "array");
@@ -25,12 +26,12 @@ Array* Array::create(GlobalObject& global_object, size_t length)
     return array;
 }
 
-// 7.3.17 CreateArrayFromList, https://tc39.es/ecma262/#sec-createarrayfromlist
-Array* Array::create_from(GlobalObject& global_object, const Vector<Value>& values)
+// 7.3.17 CreateArrayFromList ( elements ), https://tc39.es/ecma262/#sec-createarrayfromlist
+Array* Array::create_from(GlobalObject& global_object, const Vector<Value>& elements)
 {
     auto* array = Array::create(global_object);
-    for (size_t i = 0; i < values.size(); ++i)
-        array->define_property(i, values[i]);
+    for (size_t i = 0; i < elements.size(); ++i)
+        array->define_property(i, elements[i]);
     return array;
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayBufferConstructor.cpp b/Userland/Libraries/LibJS/Runtime/ArrayBufferConstructor.cpp
index bedb89a2d0..2b28e49bd5 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayBufferConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayBufferConstructor.cpp
@@ -21,11 +21,16 @@ void ArrayBufferConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
-    u8 attr = Attribute::Writable | Attribute::Configurable;
+
+    // 25.1.4.2 ArrayBuffer.prototype, https://tc39.es/ecma262/#sec-arraybuffer.prototype
     define_property(vm.names.prototype, global_object.array_buffer_prototype(), 0);
+
     define_property(vm.names.length, Value(1), Attribute::Configurable);
+
+    u8 attr = Attribute::Writable | Attribute::Configurable;
     define_native_function(vm.names.isView, is_view, 1, attr);
 
+    // 25.1.5.4 ArrayBuffer.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-arraybuffer.prototype-@@tostringtag
     define_native_accessor(vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
 }
 
@@ -33,6 +38,7 @@ ArrayBufferConstructor::~ArrayBufferConstructor()
 {
 }
 
+// 25.1.3.1 ArrayBuffer ( length ), https://tc39.es/ecma262/#sec-arraybuffer-length
 Value ArrayBufferConstructor::call()
 {
     auto& vm = this->vm();
@@ -40,6 +46,7 @@ Value ArrayBufferConstructor::call()
     return {};
 }
 
+// 25.1.3.1 ArrayBuffer ( length ), https://tc39.es/ecma262/#sec-arraybuffer-length
 Value ArrayBufferConstructor::construct(Function&)
 {
     auto& vm = this->vm();
@@ -55,6 +62,7 @@ Value ArrayBufferConstructor::construct(Function&)
     return ArrayBuffer::create(global_object(), byte_length);
 }
 
+// 25.1.4.1 ArrayBuffer.isView ( arg ), https://tc39.es/ecma262/#sec-arraybuffer.isview
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferConstructor::is_view)
 {
     auto arg = vm.argument(0);
@@ -66,6 +74,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayBufferConstructor::is_view)
     return Value(false);
 }
 
+// 25.1.4.3 get ArrayBuffer [ @@species ], https://tc39.es/ecma262/#sec-get-arraybuffer-@@species
 JS_DEFINE_NATIVE_GETTER(ArrayBufferConstructor::symbol_species_getter)
 {
     return vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp
index 5a039b65d4..b690d7fa95 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp
@@ -27,6 +27,7 @@ void ArrayBufferPrototype::initialize(GlobalObject& global_object)
     // FIXME: This should be an accessor property
     define_native_property(vm.names.byteLength, byte_length_getter, {}, Attribute::Configurable);
 
+    // 25.1.5.4 ArrayBuffer.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-arraybuffer.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "ArrayBuffer"), Attribute::Configurable);
 }
 
@@ -45,7 +46,7 @@ static ArrayBuffer* array_buffer_object_from(VM& vm, GlobalObject& global_object
     return static_cast<ArrayBuffer*>(&this_value.as_object());
 }
 
-// 25.1.5.3 ArrayBuffer.prototype.slice, https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
+// 25.1.5.3 ArrayBuffer.prototype.slice ( start, end ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::slice)
 {
     auto array_buffer_object = array_buffer_object_from(vm, global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayConstructor.cpp b/Userland/Libraries/LibJS/Runtime/ArrayConstructor.cpp
index aa54b55f94..384d12776f 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayConstructor.cpp
@@ -30,7 +30,9 @@ void ArrayConstructor::initialize(GlobalObject& global_object)
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
 
+    // 23.1.2.4 Array.prototype, https://tc39.es/ecma262/#sec-array.prototype
     define_property(vm.names.prototype, global_object.array_prototype(), 0);
+
     define_property(vm.names.length, Value(1), Attribute::Configurable);
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
@@ -38,9 +40,11 @@ void ArrayConstructor::initialize(GlobalObject& global_object)
     define_native_function(vm.names.isArray, is_array, 1, attr);
     define_native_function(vm.names.of, of, 0, attr);
 
+    // 23.1.2.5 get Array [ @@species ], https://tc39.es/ecma262/#sec-get-array-@@species
     define_native_accessor(vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
 }
 
+// 23.1.1.1 Array ( ...values ), https://tc39.es/ecma262/#sec-array
 Value ArrayConstructor::call()
 {
     if (vm().argument_count() <= 0)
@@ -63,11 +67,13 @@ Value ArrayConstructor::call()
     return array;
 }
 
+// 23.1.1.1 Array ( ...values ), https://tc39.es/ecma262/#sec-array
 Value ArrayConstructor::construct(Function&)
 {
     return call();
 }
 
+// 23.1.2.1 Array.from ( items [ , mapfn [ , thisArg ] ] ), https://tc39.es/ecma262/#sec-array.from
 JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::from)
 {
     auto value = vm.argument(0);
@@ -139,12 +145,14 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::from)
     return array;
 }
 
+// 23.1.2.2 Array.isArray ( arg ), https://tc39.es/ecma262/#sec-array.isarray
 JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::is_array)
 {
     auto value = vm.argument(0);
     return Value(value.is_array(global_object));
 }
 
+// 23.1.2.3 Array.of ( ...items ), https://tc39.es/ecma262/#sec-array.of
 JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::of)
 {
     auto* array = Array::create(global_object);
@@ -153,6 +161,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::of)
     return array;
 }
 
+// 23.1.2.5 get Array [ @@species ], https://tc39.es/ecma262/#sec-get-array-@@species
 JS_DEFINE_NATIVE_GETTER(ArrayConstructor::symbol_species_getter)
 {
     return vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ArrayIteratorPrototype.cpp
index eefa3ddcd3..9662b7557d 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayIteratorPrototype.cpp
@@ -24,6 +24,8 @@ void ArrayIteratorPrototype::initialize(GlobalObject& global_object)
     Object::initialize(global_object);
 
     define_native_function(vm.names.next, next, 0, Attribute::Configurable | Attribute::Writable);
+
+    // 23.1.5.2.2 %ArrayIteratorPrototype% [ @@toStringTag ], https://tc39.es/ecma262/#sec-%arrayiteratorprototype%-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "Array Iterator"), Attribute::Configurable);
 }
 
@@ -31,6 +33,7 @@ ArrayIteratorPrototype::~ArrayIteratorPrototype()
 {
 }
 
+// 23.1.5.2.1 %ArrayIteratorPrototype%.next ( ), https://tc39.es/ecma262/#sec-%arrayiteratorprototype%.next
 JS_DEFINE_NATIVE_FUNCTION(ArrayIteratorPrototype::next)
 {
     auto this_value = vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
index d547b64fc4..630bf86d25 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
@@ -67,6 +67,7 @@ void ArrayPrototype::initialize(GlobalObject& global_object)
     // Use define_property here instead of define_native_function so that
     // Object.is(Array.prototype[Symbol.iterator], Array.prototype.values)
     // evaluates to true
+    // 23.1.3.33 Array.prototype [ @@iterator ] ( ), https://tc39.es/ecma262/#sec-array.prototype-@@iterator
     define_property(vm.well_known_symbol_iterator(), get(vm.names.values), attr);
 }
 
@@ -124,6 +125,7 @@ static void for_each_item(VM& vm, GlobalObject& global_object, const String& nam
     }
 }
 
+// 23.1.3.7 Array.prototype.filter ( callbackfn [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.filter
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::filter)
 {
     auto* new_array = Array::create(global_object);
@@ -135,6 +137,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::filter)
     return Value(new_array);
 }
 
+// 23.1.3.12 Array.prototype.forEach ( callbackfn [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.foreach
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::for_each)
 {
     for_each_item(vm, global_object, "forEach", [](auto, auto, auto) {
@@ -143,6 +146,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::for_each)
     return js_undefined();
 }
 
+// 23.1.3.18 Array.prototype.map ( callbackfn [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.map
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::map)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -163,6 +167,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::map)
     return Value(new_array);
 }
 
+// 23.1.3.20 Array.prototype.push ( ...items ), https://tc39.es/ecma262/#sec-array.prototype.push
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::push)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -195,6 +200,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::push)
     return new_length_value;
 }
 
+// 23.1.3.31 Array.prototype.unshift ( ...items ), https://tc39.es/ecma262/#sec-array.prototype.unshift
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::unshift)
 {
     auto* array = Array::typed_this(vm, global_object);
@@ -205,6 +211,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::unshift)
     return Value(static_cast<i32>(array->indexed_properties().array_like_size()));
 }
 
+// 23.1.3.19 Array.prototype.pop ( ), https://tc39.es/ecma262/#sec-array.prototype.pop
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::pop)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -236,6 +243,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::pop)
     return element;
 }
 
+// 23.1.3.24 Array.prototype.shift ( ), https://tc39.es/ecma262/#sec-array.prototype.shift
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::shift)
 {
     auto* array = Array::typed_this(vm, global_object);
@@ -249,6 +257,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::shift)
     return result.value.value_or(js_undefined());
 }
 
+// 23.1.3.30 Array.prototype.toString ( ), https://tc39.es/ecma262/#sec-array.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::to_string)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -262,6 +271,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::to_string)
     return vm.call(join_function.as_function(), this_object);
 }
 
+// 23.1.3.29 Array.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-array.prototype.tolocalestring
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::to_locale_string)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -303,6 +313,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::to_locale_string)
     return js_string(vm, builder.to_string());
 }
 
+// 23.1.3.15 Array.prototype.join ( separator ), https://tc39.es/ecma262/#sec-array.prototype.join
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::join)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -346,6 +357,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::join)
     return js_string(vm, builder.to_string());
 }
 
+// 23.1.3.1 Array.prototype.concat ( ...items ), https://tc39.es/ecma262/#sec-array.prototype.concat
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::concat)
 {
     auto* array = Array::typed_this(vm, global_object);
@@ -372,6 +384,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::concat)
     return Value(new_array);
 }
 
+// 23.1.3.25 Array.prototype.slice ( start, end ), https://tc39.es/ecma262/#sec-array.prototype.slice
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::slice)
 {
     auto* array = Array::typed_this(vm, global_object);
@@ -417,6 +430,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::slice)
     return new_array;
 }
 
+// 23.1.3.14 Array.prototype.indexOf ( searchElement [ , fromIndex ] ), https://tc39.es/ecma262/#sec-array.prototype.indexof
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::index_of)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -448,6 +462,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::index_of)
     return Value(-1);
 }
 
+// 23.1.3.21 Array.prototype.reduce ( callbackfn [ , initialValue ] ), https://tc39.es/ecma262/#sec-array.prototype.reduce
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::reduce)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -501,6 +516,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::reduce)
     return accumulator;
 }
 
+// 23.1.3.22 Array.prototype.reduceRight ( callbackfn [ , initialValue ] ), https://tc39.es/ecma262/#sec-array.prototype.reduceright
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::reduce_right)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -554,6 +570,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::reduce_right)
     return accumulator;
 }
 
+// 23.1.3.23 Array.prototype.reverse ( ), https://tc39.es/ecma262/#sec-array.prototype.reverse
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::reverse)
 {
     auto* array = Array::typed_this(vm, global_object);
@@ -685,6 +702,7 @@ static void array_merge_sort(VM& vm, GlobalObject& global_object, Function* comp
     }
 }
 
+// 23.1.3.27 Array.prototype.sort ( comparefn ), https://tc39.es/ecma262/#sec-array.prototype.sort
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::sort)
 {
     auto* array = vm.this_value(global_object).to_object(global_object);
@@ -739,6 +757,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::sort)
     return array;
 }
 
+// 23.1.3.17 Array.prototype.lastIndexOf ( searchElement [ , fromIndex ] ), https://tc39.es/ecma262/#sec-array.prototype.lastindexof
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::last_index_of)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -770,6 +789,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::last_index_of)
     return Value(-1);
 }
 
+// 23.1.3.13 Array.prototype.includes ( searchElement [ , fromIndex ] ), https://tc39.es/ecma262/#sec-array.prototype.includes
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::includes)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -801,6 +821,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::includes)
     return Value(false);
 }
 
+// 23.1.3.8 Array.prototype.find ( predicate [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.find
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::find)
 {
     auto result = js_undefined();
@@ -816,6 +837,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::find)
     return result;
 }
 
+// 23.1.3.9 Array.prototype.findIndex ( predicate [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.findindex
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::find_index)
 {
     auto result_index = -1;
@@ -831,6 +853,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::find_index)
     return Value(result_index);
 }
 
+// 23.1.3.26 Array.prototype.some ( callbackfn [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.some
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::some)
 {
     auto result = false;
@@ -844,6 +867,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::some)
     return Value(result);
 }
 
+// 23.1.3.5 Array.prototype.every ( callbackfn [ , thisArg ] ), https://tc39.es/ecma262/#sec-array.prototype.every
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::every)
 {
     auto result = true;
@@ -857,7 +881,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::every)
     return Value(result);
 }
 
-// 23.1.3.28 Array.prototype.splice, https://tc39.es/ecma262#sec-array.prototype.splice
+// 23.1.3.28 Array.prototype.splice ( start, deleteCount, ...items ), https://tc39.es/ecma262#sec-array.prototype.splice
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::splice)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -979,6 +1003,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::splice)
     return removed_elements;
 }
 
+// 23.1.3.6 Array.prototype.fill ( value [ , start [ , end ] ] ), https://tc39.es/ecma262/#sec-array.prototype.fill
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::fill)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -1025,6 +1050,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::fill)
     return this_object;
 }
 
+// 23.1.3.32 Array.prototype.values ( ), https://tc39.es/ecma262/#sec-array.prototype.values
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::values)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -1069,6 +1095,7 @@ static void recursive_array_flat(VM& vm, GlobalObject& global_object, Array& new
     }
 }
 
+// 23.1.3.10 Array.prototype.flat ( [ depth ] ), https://tc39.es/ecma262/#sec-array.prototype.flat
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::flat)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -1094,6 +1121,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::flat)
     return new_array;
 }
 
+// 1.1 Array.prototype.at ( index ), https://tc39.es/proposal-relative-indexing-method/#sec-array.prototype.at
 JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::at)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/BigIntConstructor.cpp b/Userland/Libraries/LibJS/Runtime/BigIntConstructor.cpp
index 49e2da55fb..b475092a48 100644
--- a/Userland/Libraries/LibJS/Runtime/BigIntConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/BigIntConstructor.cpp
@@ -23,7 +23,10 @@ void BigIntConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 21.2.2.3 BigInt.prototype, https://tc39.es/ecma262/#sec-bigint.prototype
     define_property(vm.names.prototype, global_object.bigint_prototype(), 0);
+
     define_property(vm.names.length, Value(1), Attribute::Configurable);
 
     // TODO: Implement these functions below and uncomment this.
@@ -36,6 +39,7 @@ BigIntConstructor::~BigIntConstructor()
 {
 }
 
+// 21.2.1.1 BigInt ( value ), https://tc39.es/ecma262/#sec-bigint-constructor-number-value
 Value BigIntConstructor::call()
 {
     auto primitive = vm().argument(0).to_primitive(global_object(), Value::PreferredType::Number);
@@ -54,17 +58,20 @@ Value BigIntConstructor::call()
     return bigint;
 }
 
+// 21.2.1.1 BigInt ( value ), https://tc39.es/ecma262/#sec-bigint-constructor-number-value
 Value BigIntConstructor::construct(Function&)
 {
     vm().throw_exception<TypeError>(global_object(), ErrorType::NotAConstructor, "BigInt");
     return {};
 }
 
+// 21.2.2.1 BigInt.asIntN ( bits, bigint ), https://tc39.es/ecma262/#sec-bigint.asintn
 JS_DEFINE_NATIVE_FUNCTION(BigIntConstructor::as_int_n)
 {
     TODO();
 }
 
+// 21.2.2.2 BigInt.asUintN ( bits, bigint ), https://tc39.es/ecma262/#sec-bigint.asuintn
 JS_DEFINE_NATIVE_FUNCTION(BigIntConstructor::as_uint_n)
 {
     TODO();
diff --git a/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp b/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp
index 74b7f592ef..1086c2bd51 100644
--- a/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/BigIntPrototype.cpp
@@ -26,6 +26,7 @@ void BigIntPrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.toLocaleString, to_locale_string, 0, attr);
     define_native_function(vm.names.valueOf, value_of, 0, attr);
 
+    // 21.2.3.5 BigInt.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-bigint.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "BigInt"), Attribute::Configurable);
 }
 
@@ -33,7 +34,7 @@ BigIntPrototype::~BigIntPrototype()
 {
 }
 
-// thisBigIntValue, https://tc39.es/ecma262/#thisbigintvalue
+// thisBigIntValue ( value ), https://tc39.es/ecma262/#thisbigintvalue
 static Value this_bigint_value(GlobalObject& global_object, Value value)
 {
     if (value.is_bigint())
@@ -45,6 +46,7 @@ static Value this_bigint_value(GlobalObject& global_object, Value value)
     return {};
 }
 
+// 21.2.3.3 BigInt.prototype.toString ( [ radix ] ), https://tc39.es/ecma262/#sec-bigint.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(BigIntPrototype::to_string)
 {
     auto bigint_value = this_bigint_value(global_object, vm.this_value(global_object));
@@ -54,11 +56,13 @@ JS_DEFINE_NATIVE_FUNCTION(BigIntPrototype::to_string)
     return js_string(vm, bigint_value.as_bigint().big_integer().to_base10());
 }
 
+// 21.2.3.2 BigInt.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-bigint.prototype.tolocalestring
 JS_DEFINE_NATIVE_FUNCTION(BigIntPrototype::to_locale_string)
 {
     return to_string(vm, global_object);
 }
 
+// 21.2.3.4 BigInt.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-bigint.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(BigIntPrototype::value_of)
 {
     return this_bigint_value(global_object, vm.this_value(global_object));
diff --git a/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp b/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp
index 5269948555..c10fc476e3 100644
--- a/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/BooleanPrototype.cpp
@@ -28,6 +28,7 @@ BooleanPrototype::~BooleanPrototype()
 {
 }
 
+// 20.3.3.2 Boolean.prototype.toString ( ), https://tc39.es/ecma262/#sec-boolean.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(BooleanPrototype::to_string)
 {
     auto this_value = vm.this_value(global_object);
@@ -42,6 +43,7 @@ JS_DEFINE_NATIVE_FUNCTION(BooleanPrototype::to_string)
     return js_string(vm, bool_value ? "true" : "false");
 }
 
+// 20.3.3.3 Boolean.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-boolean.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(BooleanPrototype::value_of)
 {
     auto this_value = vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ConsoleObject.cpp b/Userland/Libraries/LibJS/Runtime/ConsoleObject.cpp
index 7ce538163b..02e4f3ae0c 100644
--- a/Userland/Libraries/LibJS/Runtime/ConsoleObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ConsoleObject.cpp
@@ -37,51 +37,61 @@ ConsoleObject::~ConsoleObject()
 {
 }
 
+// 1.1.6. log(...data), https://console.spec.whatwg.org/#log
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::log)
 {
     return global_object.console().log();
 }
 
+// 1.1.3. debug(...data), https://console.spec.whatwg.org/#debug
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::debug)
 {
     return global_object.console().debug();
 }
 
+// 1.1.5. info(...data), https://console.spec.whatwg.org/#info
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::info)
 {
     return global_object.console().info();
 }
 
+// 1.1.9. warn(...data), https://console.spec.whatwg.org/#warn
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::warn)
 {
     return global_object.console().warn();
 }
 
+// 1.1.4. error(...data), https://console.spec.whatwg.org/#error
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::error)
 {
     return global_object.console().error();
 }
 
+// 1.1.8. trace(...data), https://console.spec.whatwg.org/#trace
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::trace)
 {
     return global_object.console().trace();
 }
 
+// 1.2.1. count(label), https://console.spec.whatwg.org/#count
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::count)
 {
     return global_object.console().count();
 }
 
+// 1.2.2. countReset(label), https://console.spec.whatwg.org/#countreset
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::count_reset)
 {
     return global_object.console().count_reset();
 }
 
+// 1.1.2. clear(), https://console.spec.whatwg.org/#clear
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::clear)
 {
     return global_object.console().clear();
 }
 
+// 1.1.1. assert(condition, ...data), https://console.spec.whatwg.org/#assert
 JS_DEFINE_NATIVE_FUNCTION(ConsoleObject::assert_)
 {
     return global_object.console().assert_();
diff --git a/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp b/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp
index b4b0330368..08f0f511ba 100644
--- a/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp
@@ -18,10 +18,11 @@
 
 namespace JS {
 
+// 21.4.3.2 Date.parse ( string ), https://tc39.es/ecma262/#sec-date.parse
 static Value parse_simplified_iso8601(const String& iso_8601)
 {
     // Date.parse() is allowed to accept many formats. We strictly only accept things matching
-    // http://www.ecma-international.org/ecma-262/#sec-date-time-string-format
+    // 21.4.1.15 Date Time String Format, https://tc39.es/ecma262/#sec-date-time-string-format
     GenericLexer lexer(iso_8601);
     auto lex_n_digits = [&](size_t n, int& out) {
         if (lexer.tell_remaining() < n)
@@ -98,7 +99,7 @@ static Value parse_simplified_iso8601(const String& iso_8601)
     tm.tm_min = minutes == -1 ? 0 : minutes;
     tm.tm_sec = seconds == -1 ? 0 : seconds;
 
-    // http://www.ecma-international.org/ecma-262/#sec-date.parse:
+    // https://tc39.es/ecma262/#sec-date.parse:
     // "When the UTC offset representation is absent, date-only forms are interpreted as a UTC time and date-time forms are interpreted as a local time."
     time_t timestamp;
     if (timezone != -1 || hours == -1)
@@ -127,7 +128,10 @@ void DateConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 21.4.3.3 Date.prototype, https://tc39.es/ecma262/#sec-date.prototype
     define_property(vm.names.prototype, global_object.date_prototype(), 0);
+
     define_property(vm.names.length, Value(7), Attribute::Configurable);
 
     define_native_function(vm.names.now, now, 0, Attribute::Writable | Attribute::Configurable);
@@ -139,11 +143,13 @@ DateConstructor::~DateConstructor()
 {
 }
 
+// 21.4.2.1 Date ( ...values ), https://tc39.es/ecma262/#sec-date
 Value DateConstructor::call()
 {
     return js_string(heap(), Date::now(global_object())->string());
 }
 
+// 21.4.2.1 Date ( ...values ), https://tc39.es/ecma262/#sec-date
 Value DateConstructor::construct(Function&)
 {
     auto& vm = this->vm();
@@ -255,6 +261,7 @@ Value DateConstructor::construct(Function&)
     return date;
 }
 
+// 21.4.3.1 Date.now ( ), https://tc39.es/ecma262/#sec-date.now
 JS_DEFINE_NATIVE_FUNCTION(DateConstructor::now)
 {
     struct timeval tv;
@@ -262,6 +269,7 @@ JS_DEFINE_NATIVE_FUNCTION(DateConstructor::now)
     return Value(tv.tv_sec * 1000.0 + tv.tv_usec / 1000.0);
 }
 
+// 21.4.3.2 Date.parse ( string ), https://tc39.es/ecma262/#sec-date.parse
 JS_DEFINE_NATIVE_FUNCTION(DateConstructor::parse)
 {
     if (!vm.argument_count())
@@ -274,6 +282,7 @@ JS_DEFINE_NATIVE_FUNCTION(DateConstructor::parse)
     return parse_simplified_iso8601(iso_8601);
 }
 
+// 21.4.3.4 Date.UTC ( year [ , month [ , date [ , hours [ , minutes [ , seconds [ , ms ] ] ] ] ] ] ), https://tc39.es/ecma262/#sec-date.utc
 JS_DEFINE_NATIVE_FUNCTION(DateConstructor::utc)
 {
     auto arg_or = [&vm, &global_object](size_t i, i32 fallback) { return vm.argument_count() > i ? vm.argument(i).to_i32(global_object) : fallback; };
@@ -293,4 +302,5 @@ JS_DEFINE_NATIVE_FUNCTION(DateConstructor::utc)
     int milliseconds = arg_or(6, 0);
     return Value(1000.0 * timegm(&tm) + milliseconds);
 }
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp b/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
index 1fdeac5cdd..fb36c9e963 100644
--- a/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DatePrototype.cpp
@@ -84,12 +84,13 @@ void DatePrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.toString, to_string, 0, attr);
     define_native_function(vm.names.toJSON, to_json, 1, attr);
 
+    // 21.4.4.45 Date.prototype [ @@toPrimitive ] ( hint ), https://tc39.es/ecma262/#sec-date.prototype-@@toprimitive
     define_native_function(vm.well_known_symbol_to_primitive(), symbol_to_primitive, 1, Attribute::Configurable);
 
     // Aliases.
     define_native_function(vm.names.valueOf, get_time, 0, attr);
 
-    // https://tc39.es/ecma262/#sec-date.prototype.togmtstring
+    // B.2.4.3 Date.prototype.toGMTString ( ), https://tc39.es/ecma262/#sec-date.prototype.togmtstring
     // The function object that is the initial value of Date.prototype.toGMTString
     // is the same function object that is the initial value of Date.prototype.toUTCString.
     define_property(vm.names.toGMTString, get(vm.names.toUTCString), attr);
@@ -99,6 +100,7 @@ DatePrototype::~DatePrototype()
 {
 }
 
+// 21.4.4.2 Date.prototype.getDate ( ), https://tc39.es/ecma262/#sec-date.prototype.getdate
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_date)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -111,6 +113,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_date)
     return Value(this_object->date());
 }
 
+// 21.4.4.20 Date.prototype.setDate ( date ), https://tc39.es/ecma262/#sec-date.prototype.setdate
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_date)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -138,6 +141,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_date)
     return Value(this_object->time());
 }
 
+// 21.4.4.3 Date.prototype.getDay ( ), https://tc39.es/ecma262/#sec-date.prototype.getday
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_day)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -150,6 +154,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_day)
     return Value(this_object->day());
 }
 
+// 21.4.4.4 Date.prototype.getFullYear ( ), https://tc39.es/ecma262/#sec-date.prototype.getfullyear
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_full_year)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -162,6 +167,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_full_year)
     return Value(this_object->year());
 }
 
+// 21.4.4.21 Date.prototype.setFullYear ( year [ , month [ , date ] ] ), https://tc39.es/ecma262/#sec-date.prototype.setfullyear
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_full_year)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -210,6 +216,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_full_year)
     return Value(this_object->time());
 }
 
+// B.2.4.1 Date.prototype.getYear ( ), https://tc39.es/ecma262/#sec-date.prototype.getyear
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_year)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -222,6 +229,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_year)
     return Value(this_object->year() - 1900);
 }
 
+// B.2.4.2 Date.prototype.setYear ( year ), https://tc39.es/ecma262/#sec-date.prototype.setyear
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_year)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -252,6 +260,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_year)
     return Value(this_object->time());
 }
 
+// 21.4.4.5 Date.prototype.getHours ( ), https://tc39.es/ecma262/#sec-date.prototype.gethours
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_hours)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -264,6 +273,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_hours)
     return Value(this_object->hours());
 }
 
+// 21.4.4.22 Date.prototype.setHours ( hour [ , min [ , sec [ , ms ] ] ] ), https://tc39.es/ecma262/#sec-date.prototype.sethours
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_hours)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -323,6 +333,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_hours)
     return Value(this_object->time());
 }
 
+// 21.4.4.23 Date.prototype.setMilliseconds ( ms ), https://tc39.es/ecma262/#sec-date.prototype.setmilliseconds
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_milliseconds)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -335,6 +346,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_milliseconds)
     return Value(this_object->milliseconds());
 }
 
+// 21.4.4.23 Date.prototype.setMilliseconds ( ms ), https://tc39.es/ecma262/#sec-date.prototype.setmilliseconds
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_milliseconds)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -370,6 +382,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_milliseconds)
     return Value(this_object->time());
 }
 
+// 21.4.4.7 Date.prototype.getMinutes ( ), https://tc39.es/ecma262/#sec-date.prototype.getminutes
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_minutes)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -382,6 +395,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_minutes)
     return Value(this_object->minutes());
 }
 
+// 21.4.4.24 Date.prototype.setMinutes ( min [ , sec [ , ms ] ] ), https://tc39.es/ecma262/#sec-date.prototype.setminutes
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_minutes)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -432,6 +446,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_minutes)
     return Value(this_object->time());
 }
 
+// 21.4.4.8 Date.prototype.getMonth ( ), https://tc39.es/ecma262/#sec-date.prototype.getmonth
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_month)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -444,6 +459,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_month)
     return Value(this_object->month());
 }
 
+// 21.4.4.25 Date.prototype.setMonth ( month [ , date ] ), https://tc39.es/ecma262/#sec-date.prototype.setmonth
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_month)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -482,6 +498,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_month)
     return Value(this_object->time());
 }
 
+// 21.4.4.9 Date.prototype.getSeconds ( ), https://tc39.es/ecma262/#sec-date.prototype.getseconds
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_seconds)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -494,6 +511,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_seconds)
     return Value(this_object->seconds());
 }
 
+// 21.4.4.26 Date.prototype.setSeconds ( sec [ , ms ] ), https://tc39.es/ecma262/#sec-date.prototype.setseconds
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_seconds)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -535,6 +553,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_seconds)
     return Value(this_object->time());
 }
 
+// 21.4.4.10 Date.prototype.getTime ( ), https://tc39.es/ecma262/#sec-date.prototype.gettime
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_time)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -547,6 +566,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_time)
     return Value(this_object->time());
 }
 
+// 21.4.4.27 Date.prototype.setTime ( time ), https://tc39.es/ecma262/#sec-date.prototype.settime
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_time)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -575,6 +595,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::set_time)
     return Value(this_object->time());
 }
 
+// 21.4.4.11 Date.prototype.getTimezoneOffset ( ), https://tc39.es/ecma262/#sec-date.prototype.gettimezoneoffset
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_timezone_offset)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -588,6 +609,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_timezone_offset)
     return Value(0);
 }
 
+// 21.4.4.12 Date.prototype.getUTCDate ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcdate
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_date)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -600,6 +622,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_date)
     return Value(this_object->utc_date());
 }
 
+// 21.4.4.13 Date.prototype.getUTCDay ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcday
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_day)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -612,6 +635,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_day)
     return Value(this_object->utc_day());
 }
 
+// 21.4.4.14 Date.prototype.getUTCFullYear ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcfullyear
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_full_year)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -624,6 +648,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_full_year)
     return Value(this_object->utc_full_year());
 }
 
+// 21.4.4.15 Date.prototype.getUTCHours ( ), https://tc39.es/ecma262/#sec-date.prototype.getutchours
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_hours)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -636,6 +661,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_hours)
     return Value(this_object->utc_hours());
 }
 
+// 21.4.4.16 Date.prototype.getUTCMilliseconds ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcmilliseconds
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_milliseconds)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -648,6 +674,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_milliseconds)
     return Value(this_object->utc_milliseconds());
 }
 
+// 21.4.4.18 Date.prototype.getUTCMonth ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcmonth
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_month)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -660,6 +687,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_month)
     return Value(this_object->utc_month());
 }
 
+// 21.4.4.17 Date.prototype.getUTCMinutes ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcminutes
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_minutes)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -672,6 +700,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_minutes)
     return Value(this_object->utc_minutes());
 }
 
+// 21.4.4.19 Date.prototype.getUTCSeconds ( ), https://tc39.es/ecma262/#sec-date.prototype.getutcseconds
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_seconds)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -684,6 +713,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::get_utc_seconds)
     return Value(this_object->utc_seconds());
 }
 
+// 21.4.4.35 Date.prototype.toDateString ( ), https://tc39.es/ecma262/#sec-date.prototype.todatestring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_date_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -697,13 +727,14 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_date_string)
     return js_string(vm, move(string));
 }
 
+// B.2.4.3 Date.prototype.toGMTString ( ), https://tc39.es/ecma262/#sec-date.prototype.togmtstring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_gmt_string)
 {
-    // toGMTString is deprecated but kept for compatibility.
-    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toGMTString
+    // NOTE: The toUTCString method is preferred. The toGMTString method is provided principally for compatibility with old code.
     return to_utc_string(vm, global_object);
 }
 
+// 21.4.4.43 Date.prototype.toUTCString ( ), https://tc39.es/ecma262/#sec-date.prototype.toutcstring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_utc_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -718,6 +749,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_utc_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.36 Date.prototype.toISOString ( ), https://tc39.es/ecma262/#sec-date.prototype.toisostring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_iso_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -733,6 +765,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_iso_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.38 Date.prototype.toLocaleDateString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-date.prototype.tolocaledatestring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_locale_date_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -747,6 +780,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_locale_date_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.39 Date.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-date.prototype.tolocalestring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_locale_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -761,6 +795,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_locale_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.40 Date.prototype.toLocaleTimeString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-date.prototype.tolocaletimestring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_locale_time_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -775,6 +810,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_locale_time_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.42 Date.prototype.toTimeString ( ), https://tc39.es/ecma262/#sec-date.prototype.totimestring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_time_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -788,6 +824,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_time_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.41 Date.prototype.toString ( ), https://tc39.es/ecma262/#sec-date.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_string)
 {
     auto* this_object = typed_this(vm, global_object);
@@ -801,6 +838,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_string)
     return js_string(vm, move(string));
 }
 
+// 21.4.4.37 Date.prototype.toJSON ( key ), https://tc39.es/ecma262/#sec-date.prototype.tojson
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_json)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -814,6 +852,7 @@ JS_DEFINE_NATIVE_FUNCTION(DatePrototype::to_json)
     return this_object->invoke(vm.names.toISOString);
 }
 
+// 21.4.4.45 Date.prototype [ @@toPrimitive ] ( hint ), https://tc39.es/ecma262/#sec-date.prototype-@@toprimitive
 JS_DEFINE_NATIVE_FUNCTION(DatePrototype::symbol_to_primitive)
 {
     auto this_value = vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp
index c12dca2d9d..a902cd5bf3 100644
--- a/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp
@@ -29,7 +29,7 @@ void ErrorPrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.toString, to_string, 0, attr);
 }
 
-// 20.5.3.4 Error.prototype.toString, https://tc39.es/ecma262/#sec-error.prototype.tostring
+// 20.5.3.4 Error.prototype.toString ( ), https://tc39.es/ecma262/#sec-error.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(ErrorPrototype::to_string)
 {
     auto this_value = vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp b/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
index 77cad5c748..85c7b2e1fc 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
@@ -42,6 +42,7 @@ FunctionPrototype::~FunctionPrototype()
 {
 }
 
+// 20.2.3.1 Function.prototype.apply ( thisArg, argArray ), https://tc39.es/ecma262/#sec-function.prototype.apply
 JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::apply)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -62,6 +63,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::apply)
     return vm.call(function, this_arg, move(arguments));
 }
 
+// 20.2.3.2 Function.prototype.bind ( thisArg, ...args ), https://tc39.es/ecma262/#sec-function.prototype.bind
 JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::bind)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -83,6 +85,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::bind)
     return this_function.bind(bound_this_arg, move(arguments));
 }
 
+// 20.2.3.3 Function.prototype.call ( thisArg, ...args ), https://tc39.es/ecma262/#sec-function.prototype.call
 JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::call)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -102,6 +105,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::call)
     return vm.call(function, this_arg, move(arguments));
 }
 
+// 20.2.3.5 Function.prototype.toString ( ), https://tc39.es/ecma262/#sec-function.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::to_string)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -154,6 +158,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::to_string)
     return js_string(vm, function_source);
 }
 
+// 20.2.3.6 Function.prototype [ @@hasInstance ] ( V ), https://tc39.es/ecma262/#sec-function.prototype-@@hasinstance
 JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::symbol_has_instance)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/GeneratorObject.cpp b/Userland/Libraries/LibJS/Runtime/GeneratorObject.cpp
index 9422ed168c..8fb800bf39 100644
--- a/Userland/Libraries/LibJS/Runtime/GeneratorObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GeneratorObject.cpp
@@ -29,6 +29,9 @@ GeneratorObject::GeneratorObject(GlobalObject& global_object)
 
 void GeneratorObject::initialize(GlobalObject& global_object)
 {
+    // FIXME: These should be on a separate Generator prototype object!
+    // https://tc39.es/ecma262/#sec-generator-objects
+
     auto& vm = this->vm();
     Object::initialize(global_object);
     define_native_function(vm.names.next, next);
diff --git a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
index 08fe603084..7761f171e3 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
@@ -210,6 +210,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::gc)
     return js_undefined();
 }
 
+// 19.2.3 isNaN ( number ), https://tc39.es/ecma262/#sec-isnan-number
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::is_nan)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -218,6 +219,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::is_nan)
     return Value(number.is_nan());
 }
 
+// 19.2.2 isFinite ( number ), https://tc39.es/ecma262/#sec-isfinite-number
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::is_finite)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -226,6 +228,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::is_finite)
     return Value(number.is_finite_number());
 }
 
+// 19.2.4 parseFloat ( string ), https://tc39.es/ecma262/#sec-parsefloat-string
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::parse_float)
 {
     if (vm.argument(0).is_number())
@@ -243,9 +246,9 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::parse_float)
     return js_nan();
 }
 
+// 19.2.5 parseInt ( string, radix ), https://tc39.es/ecma262/#sec-parseint-string-radix
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::parse_int)
 {
-    // 18.2.5 parseInt ( string, radix )
     auto input_string = vm.argument(0).to_string(global_object);
     if (vm.exception())
         return {};
@@ -333,6 +336,7 @@ Value GlobalObject::get_this_binding(GlobalObject&) const
     return Value(this);
 }
 
+// 19.2.1 eval ( x ), https://tc39.es/ecma262/#sec-eval-x
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::eval)
 {
     if (!vm.argument(0).is_string())
@@ -354,7 +358,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::eval)
     return interpreter.execute_statement(global_object, program).value_or(js_undefined());
 }
 
-// 19.2.6.1.1 Encode ( string, unescapedSet )
+// 19.2.6.1.1 Encode ( string, unescapedSet ), https://tc39.es/ecma262/#sec-encode
 static String encode([[maybe_unused]] JS::GlobalObject& global_object, const String& string, StringView unescaped_set)
 {
     StringBuilder encoded_builder;
@@ -369,7 +373,7 @@ static String encode([[maybe_unused]] JS::GlobalObject& global_object, const Str
     return encoded_builder.build();
 }
 
-// 19.2.6.1.2 Decode ( string, reservedSet )
+// 19.2.6.1.2 Decode ( string, reservedSet ), https://tc39.es/ecma262/#sec-decode
 static String decode(JS::GlobalObject& global_object, const String& string, StringView reserved_set)
 {
     StringBuilder decoded_builder;
@@ -423,6 +427,7 @@ static String decode(JS::GlobalObject& global_object, const String& string, Stri
     return decoded_builder.build();
 }
 
+// 19.2.6.4 encodeURI ( uri ), https://tc39.es/ecma262/#sec-encodeuri-uri
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri)
 {
     auto uri_string = vm.argument(0).to_string(global_object);
@@ -434,6 +439,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri)
     return js_string(vm, move(encoded));
 }
 
+// 19.2.6.2 decodeURI ( encodedURI ), https://tc39.es/ecma262/#sec-decodeuri-encodeduri
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri)
 {
     auto uri_string = vm.argument(0).to_string(global_object);
@@ -445,6 +451,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri)
     return js_string(vm, move(decoded));
 }
 
+// 19.2.6.5 encodeURIComponent ( uriComponent ), https://tc39.es/ecma262/#sec-encodeuricomponent-uricomponent
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri_component)
 {
     auto uri_string = vm.argument(0).to_string(global_object);
@@ -456,6 +463,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri_component)
     return js_string(vm, move(encoded));
 }
 
+// 19.2.6.3 decodeURIComponent ( encodedURIComponent ), https://tc39.es/ecma262/#sec-decodeuricomponent-encodeduricomponent
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri_component)
 {
     auto uri_string = vm.argument(0).to_string(global_object);
@@ -467,6 +475,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri_component)
     return js_string(vm, move(decoded));
 }
 
+// B.2.1.1 escape ( string ), https://tc39.es/ecma262/#sec-escape-string
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::escape)
 {
     auto string = vm.argument(0).to_string(global_object);
@@ -486,6 +495,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::escape)
     return js_string(vm, escaped.build());
 }
 
+// B.2.1.2 unescape ( string ), https://tc39.es/ecma262/#sec-unescape-string
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::unescape)
 {
     auto string = vm.argument(0).to_string(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/IteratorOperations.cpp b/Userland/Libraries/LibJS/Runtime/IteratorOperations.cpp
index 2087564dc1..92cba45ab2 100644
--- a/Userland/Libraries/LibJS/Runtime/IteratorOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/IteratorOperations.cpp
@@ -10,6 +10,7 @@
 
 namespace JS {
 
+// 7.4.1 GetIterator ( obj [ , hint [ , method ] ] ), https://tc39.es/ecma262/#sec-getiterator
 Object* get_iterator(GlobalObject& global_object, Value value, IteratorHint hint, Value method)
 {
     auto& vm = global_object.vm();
@@ -37,6 +38,7 @@ Object* get_iterator(GlobalObject& global_object, Value value, IteratorHint hint
     return &iterator.as_object();
 }
 
+// 7.4.2 IteratorNext ( iteratorRecord [ , value ] ), https://tc39.es/ecma262/#sec-iteratornext
 Object* iterator_next(Object& iterator, Value value)
 {
     auto& vm = iterator.vm();
@@ -66,11 +68,13 @@ Object* iterator_next(Object& iterator, Value value)
     return &result.as_object();
 }
 
+// 7.4.6 IteratorClose ( iteratorRecord, completion ), https://tc39.es/ecma262/#sec-iteratorclose
 void iterator_close([[maybe_unused]] Object& iterator)
 {
     TODO();
 }
 
+// 7.4.10 IterableToList ( items [ , method ] ), https://tc39.es/ecma262/#sec-iterabletolist
 MarkedValueList iterable_to_list(GlobalObject& global_object, Value iterable, Value method)
 {
     auto& vm = global_object.vm();
@@ -86,6 +90,7 @@ MarkedValueList iterable_to_list(GlobalObject& global_object, Value iterable, Va
     return values;
 }
 
+// 7.4.8 CreateIterResultObject ( value, done ), https://tc39.es/ecma262/#sec-createiterresultobject
 Value create_iterator_result_object(GlobalObject& global_object, Value value, bool done)
 {
     auto& vm = global_object.vm();
diff --git a/Userland/Libraries/LibJS/Runtime/IteratorOperations.h b/Userland/Libraries/LibJS/Runtime/IteratorOperations.h
index 53ec962f73..10e08bf96c 100644
--- a/Userland/Libraries/LibJS/Runtime/IteratorOperations.h
+++ b/Userland/Libraries/LibJS/Runtime/IteratorOperations.h
@@ -11,8 +11,7 @@
 
 namespace JS {
 
-// Common iterator operations defined in ECMA262 7.4
-// https://tc39.es/ecma262/#sec-operations-on-iterator-objects
+// 7.4 Operations on Iterator Objects, https://tc39.es/ecma262/#sec-operations-on-iterator-objects
 
 enum class IteratorHint {
     Sync,
diff --git a/Userland/Libraries/LibJS/Runtime/IteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/IteratorPrototype.cpp
index 4f3093809a..8f55186e51 100644
--- a/Userland/Libraries/LibJS/Runtime/IteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/IteratorPrototype.cpp
@@ -25,6 +25,7 @@ IteratorPrototype::~IteratorPrototype()
 {
 }
 
+// 27.1.2.1 %IteratorPrototype% [ @@iterator ] ( ), https://tc39.es/ecma262/#sec-%iteratorprototype%-@@iterator
 JS_DEFINE_NATIVE_FUNCTION(IteratorPrototype::symbol_iterator)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/JSONObject.cpp b/Userland/Libraries/LibJS/Runtime/JSONObject.cpp
index e10cb9c87e..4830176608 100644
--- a/Userland/Libraries/LibJS/Runtime/JSONObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/JSONObject.cpp
@@ -33,6 +33,8 @@ void JSONObject::initialize(GlobalObject& global_object)
     u8 attr = Attribute::Writable | Attribute::Configurable;
     define_native_function(vm.names.stringify, stringify, 3, attr);
     define_native_function(vm.names.parse, parse, 2, attr);
+
+    // 25.5.3 JSON [ @@toStringTag ], https://tc39.es/ecma262/#sec-json-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "JSON"), Attribute::Configurable);
 }
 
@@ -117,6 +119,7 @@ String JSONObject::stringify_impl(GlobalObject& global_object, Value value, Valu
     return result;
 }
 
+// 25.5.2 JSON.stringify ( value [ , replacer [ , space ] ] ), https://tc39.es/ecma262/#sec-json.stringify
 JS_DEFINE_NATIVE_FUNCTION(JSONObject::stringify)
 {
     if (!vm.argument_count())
@@ -376,6 +379,7 @@ String JSONObject::quote_json_string(String string)
     return builder.to_string();
 }
 
+// 25.5.1 JSON.parse ( text [ , reviver ] ), https://tc39.es/ecma262/#sec-json.parse
 JS_DEFINE_NATIVE_FUNCTION(JSONObject::parse)
 {
     if (!vm.argument_count())
diff --git a/Userland/Libraries/LibJS/Runtime/JobCallback.h b/Userland/Libraries/LibJS/Runtime/JobCallback.h
index 72b4f37da1..5cd67b5ee2 100644
--- a/Userland/Libraries/LibJS/Runtime/JobCallback.h
+++ b/Userland/Libraries/LibJS/Runtime/JobCallback.h
@@ -11,18 +11,18 @@
 
 namespace JS {
 
-// 9.4.1 JobCallback Records, https://tc39.es/ecma262/#sec-jobcallback-records
+// 9.5.1 JobCallback Records, https://tc39.es/ecma262/#sec-jobcallback-records
 struct JobCallback {
     Function* callback;
 };
 
-// 9.4.2 HostMakeJobCallback, https://tc39.es/ecma262/#sec-hostmakejobcallback
+// 9.5.2 HostMakeJobCallback ( callback ), https://tc39.es/ecma262/#sec-hostmakejobcallback
 inline JobCallback make_job_callback(Function& callback)
 {
     return { &callback };
 }
 
-// 9.4.3 HostCallJobCallback, https://tc39.es/ecma262/#sec-hostcalljobcallback
+// 9.5.3 HostCallJobCallback ( jobCallback, V, argumentsList ), https://tc39.es/ecma262/#sec-hostcalljobcallback
 template<typename... Args>
 [[nodiscard]] inline Value call_job_callback(VM& vm, JobCallback& job_callback, Value this_value, Args... args)
 {
diff --git a/Userland/Libraries/LibJS/Runtime/MathObject.cpp b/Userland/Libraries/LibJS/Runtime/MathObject.cpp
index b44ba830dd..38849e58ae 100644
--- a/Userland/Libraries/LibJS/Runtime/MathObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/MathObject.cpp
@@ -60,6 +60,7 @@ void MathObject::initialize(GlobalObject& global_object)
     define_native_function(vm.names.cosh, cosh, 1, attr);
     define_native_function(vm.names.tanh, tanh, 1, attr);
 
+    // 21.3.1 Value Properties of the Math Object, https://tc39.es/ecma262/#sec-value-properties-of-the-math-object
     define_property(vm.names.E, Value(M_E), 0);
     define_property(vm.names.LN2, Value(M_LN2), 0);
     define_property(vm.names.LN10, Value(M_LN10), 0);
@@ -69,6 +70,7 @@ void MathObject::initialize(GlobalObject& global_object)
     define_property(vm.names.SQRT1_2, Value(M_SQRT1_2), 0);
     define_property(vm.names.SQRT2, Value(M_SQRT2), 0);
 
+    // 21.3.1.9 Math [ @@toStringTag ], https://tc39.es/ecma262/#sec-math-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Math"), Attribute::Configurable);
 }
 
@@ -76,6 +78,7 @@ MathObject::~MathObject()
 {
 }
 
+// 21.3.2.1 Math.abs ( x ), https://tc39.es/ecma262/#sec-math.abs
 JS_DEFINE_NATIVE_FUNCTION(MathObject::abs)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -90,6 +93,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::abs)
     return Value(number.as_double() < 0 ? -number.as_double() : number.as_double());
 }
 
+// 21.3.2.27 Math.random ( ), https://tc39.es/ecma262/#sec-math.random
 JS_DEFINE_NATIVE_FUNCTION(MathObject::random)
 {
 #ifdef __serenity__
@@ -100,6 +104,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::random)
     return Value(r);
 }
 
+// 21.3.2.32 Math.sqrt ( x ), https://tc39.es/ecma262/#sec-math.sqrt
 JS_DEFINE_NATIVE_FUNCTION(MathObject::sqrt)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -110,6 +115,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::sqrt)
     return Value(::sqrt(number.as_double()));
 }
 
+// 21.3.2.16 Math.floor ( x ), https://tc39.es/ecma262/#sec-math.floor
 JS_DEFINE_NATIVE_FUNCTION(MathObject::floor)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -120,6 +126,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::floor)
     return Value(::floor(number.as_double()));
 }
 
+// 21.3.2.10 Math.ceil ( x ), https://tc39.es/ecma262/#sec-math.ceil
 JS_DEFINE_NATIVE_FUNCTION(MathObject::ceil)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -133,6 +140,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::ceil)
     return Value(::ceil(number.as_double()));
 }
 
+// 21.3.2.28 Math.round ( x ), https://tc39.es/ecma262/#sec-math.round
 JS_DEFINE_NATIVE_FUNCTION(MathObject::round)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -152,6 +160,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::round)
     return Value(intpart);
 }
 
+// 21.3.2.24 Math.max ( ...args ), https://tc39.es/ecma262/#sec-math.max
 JS_DEFINE_NATIVE_FUNCTION(MathObject::max)
 {
     Vector<Value> coerced;
@@ -172,6 +181,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::max)
     return highest;
 }
 
+// 21.3.2.25 Math.min ( ...args ), https://tc39.es/ecma262/#sec-math.min
 JS_DEFINE_NATIVE_FUNCTION(MathObject::min)
 {
     Vector<Value> coerced;
@@ -192,6 +202,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::min)
     return lowest;
 }
 
+// 21.3.2.35 Math.trunc ( x ), https://tc39.es/ecma262/#sec-math.trunc
 JS_DEFINE_NATIVE_FUNCTION(MathObject::trunc)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -204,6 +215,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::trunc)
     return MathObject::floor(vm, global_object);
 }
 
+// 21.3.2.30 Math.sin ( x ), https://tc39.es/ecma262/#sec-math.sin
 JS_DEFINE_NATIVE_FUNCTION(MathObject::sin)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -214,6 +226,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::sin)
     return Value(::sin(number.as_double()));
 }
 
+// 21.3.2.12 Math.cos ( x ), https://tc39.es/ecma262/#sec-math.cos
 JS_DEFINE_NATIVE_FUNCTION(MathObject::cos)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -224,6 +237,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::cos)
     return Value(::cos(number.as_double()));
 }
 
+// 21.3.2.33 Math.tan ( x ), https://tc39.es/ecma262/#sec-math.tan
 JS_DEFINE_NATIVE_FUNCTION(MathObject::tan)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -234,6 +248,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::tan)
     return Value(::tan(number.as_double()));
 }
 
+// 21.3.2.26 Math.pow ( base, exponent ), https://tc39.es/ecma262/#sec-math.pow
 JS_DEFINE_NATIVE_FUNCTION(MathObject::pow)
 {
     auto base = vm.argument(0).to_number(global_object);
@@ -291,6 +306,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::pow)
     return Value(::pow(base.as_double(), exponent.as_double()));
 }
 
+// 21.3.2.14 Math.exp ( x ), https://tc39.es/ecma262/#sec-math.exp
 JS_DEFINE_NATIVE_FUNCTION(MathObject::exp)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -301,6 +317,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::exp)
     return Value(::exp(number.as_double()));
 }
 
+// 21.3.2.15 Math.expm1 ( x ), https://tc39.es/ecma262/#sec-math.expm1
 JS_DEFINE_NATIVE_FUNCTION(MathObject::expm1)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -311,6 +328,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::expm1)
     return Value(::expm1(number.as_double()));
 }
 
+// 21.3.2.29 Math.sign ( x ), https://tc39.es/ecma262/#sec-math.sign
 JS_DEFINE_NATIVE_FUNCTION(MathObject::sign)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -327,6 +345,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::sign)
     return js_nan();
 }
 
+// 21.3.2.11 Math.clz32 ( x ), https://tc39.es/ecma262/#sec-math.clz32
 JS_DEFINE_NATIVE_FUNCTION(MathObject::clz32)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -337,6 +356,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::clz32)
     return Value(__builtin_clz((unsigned)number.as_double()));
 }
 
+// 21.3.2.2 Math.acos ( x ), https://tc39.es/ecma262/#sec-math.acos
 JS_DEFINE_NATIVE_FUNCTION(MathObject::acos)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -349,6 +369,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::acos)
     return Value(::acos(number.as_double()));
 }
 
+// 21.3.2.3 Math.acosh ( x ), https://tc39.es/ecma262/#sec-math.acosh
 JS_DEFINE_NATIVE_FUNCTION(MathObject::acosh)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -359,6 +380,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::acosh)
     return Value(::acosh(number.as_double()));
 }
 
+// 21.3.2.4 Math.asin ( x ), https://tc39.es/ecma262/#sec-math.asin
 JS_DEFINE_NATIVE_FUNCTION(MathObject::asin)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -369,6 +391,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::asin)
     return Value(::asin(number.as_double()));
 }
 
+// 21.3.2.5 Math.asinh ( x ), https://tc39.es/ecma262/#sec-math.asinh
 JS_DEFINE_NATIVE_FUNCTION(MathObject::asinh)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -377,6 +400,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::asinh)
     return Value(::asinh(number.as_double()));
 }
 
+// 21.3.2.6 Math.atan ( x ), https://tc39.es/ecma262/#sec-math.atan
 JS_DEFINE_NATIVE_FUNCTION(MathObject::atan)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -391,6 +415,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::atan)
     return Value(::atan(number.as_double()));
 }
 
+// 21.3.2.7 Math.atanh ( x ), https://tc39.es/ecma262/#sec-math.atanh
 JS_DEFINE_NATIVE_FUNCTION(MathObject::atanh)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -401,6 +426,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::atanh)
     return Value(::atanh(number.as_double()));
 }
 
+// 21.3.2.21 Math.log1p ( x ), https://tc39.es/ecma262/#sec-math.log1p
 JS_DEFINE_NATIVE_FUNCTION(MathObject::log1p)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -411,6 +437,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::log1p)
     return Value(::log1p(number.as_double()));
 }
 
+// 21.3.2.9 Math.cbrt ( x ), https://tc39.es/ecma262/#sec-math.cbrt
 JS_DEFINE_NATIVE_FUNCTION(MathObject::cbrt)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -419,6 +446,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::cbrt)
     return Value(::cbrt(number.as_double()));
 }
 
+// 21.3.2.8 Math.atan2 ( y, x ), https://tc39.es/ecma262/#sec-math.atan2
 JS_DEFINE_NATIVE_FUNCTION(MathObject::atan2)
 {
     auto constexpr three_quarters_pi = M_PI_4 + M_PI_2;
@@ -481,6 +509,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::atan2)
     return Value(::atan2(y.as_double(), x.as_double()));
 }
 
+// 21.3.2.17 Math.fround ( x ), https://tc39.es/ecma262/#sec-math.fround
 JS_DEFINE_NATIVE_FUNCTION(MathObject::fround)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -491,6 +520,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::fround)
     return Value((float)number.as_double());
 }
 
+// 21.3.2.18 Math.hypot ( ...args ), https://tc39.es/ecma262/#sec-math.hypot
 JS_DEFINE_NATIVE_FUNCTION(MathObject::hypot)
 {
     Vector<Value> coerced;
@@ -522,6 +552,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::hypot)
     return Value(::sqrt(sum_of_squares));
 }
 
+// 21.3.2.19 Math.imul ( x, y ), https://tc39.es/ecma262/#sec-math.imul
 JS_DEFINE_NATIVE_FUNCTION(MathObject::imul)
 {
     auto a = vm.argument(0).to_u32(global_object);
@@ -533,6 +564,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::imul)
     return Value(static_cast<i32>(a * b));
 }
 
+// 21.3.2.20 Math.log ( x ), https://tc39.es/ecma262/#sec-math.log
 JS_DEFINE_NATIVE_FUNCTION(MathObject::log)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -543,6 +575,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::log)
     return Value(::log(number.as_double()));
 }
 
+// 21.3.2.23 Math.log2 ( x ), https://tc39.es/ecma262/#sec-math.log2
 JS_DEFINE_NATIVE_FUNCTION(MathObject::log2)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -553,6 +586,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::log2)
     return Value(::log2(number.as_double()));
 }
 
+// 21.3.2.22 Math.log10 ( x ), https://tc39.es/ecma262/#sec-math.log10
 JS_DEFINE_NATIVE_FUNCTION(MathObject::log10)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -563,6 +597,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::log10)
     return Value(::log10(number.as_double()));
 }
 
+// 21.3.2.31 Math.sinh ( x ), https://tc39.es/ecma262/#sec-math.sinh
 JS_DEFINE_NATIVE_FUNCTION(MathObject::sinh)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -573,6 +608,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::sinh)
     return Value(::sinh(number.as_double()));
 }
 
+// 21.3.2.13 Math.cosh ( x ), https://tc39.es/ecma262/#sec-math.cosh
 JS_DEFINE_NATIVE_FUNCTION(MathObject::cosh)
 {
     auto number = vm.argument(0).to_number(global_object);
@@ -583,6 +619,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::cosh)
     return Value(::cosh(number.as_double()));
 }
 
+// 21.3.2.34 Math.tanh ( x ), https://tc39.es/ecma262/#sec-math.tanh
 JS_DEFINE_NATIVE_FUNCTION(MathObject::tanh)
 {
     auto number = vm.argument(0).to_number(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/NumberConstructor.cpp b/Userland/Libraries/LibJS/Runtime/NumberConstructor.cpp
index 57d07fb555..14cd4d4e1f 100644
--- a/Userland/Libraries/LibJS/Runtime/NumberConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/NumberConstructor.cpp
@@ -31,14 +31,18 @@ void NumberConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 21.1.2.15 Number.prototype, https://tc39.es/ecma262/#sec-number.prototype
+    define_property(vm.names.prototype, global_object.number_prototype(), 0);
+
+    define_property(vm.names.length, Value(1), Attribute::Configurable);
+
     u8 attr = Attribute::Writable | Attribute::Configurable;
     define_native_function(vm.names.isFinite, is_finite, 1, attr);
     define_native_function(vm.names.isInteger, is_integer, 1, attr);
     define_native_function(vm.names.isNaN, is_nan, 1, attr);
     define_native_function(vm.names.isSafeInteger, is_safe_integer, 1, attr);
     define_property(vm.names.parseFloat, global_object.get(vm.names.parseFloat));
-    define_property(vm.names.prototype, global_object.number_prototype(), 0);
-    define_property(vm.names.length, Value(1), Attribute::Configurable);
     define_property(vm.names.EPSILON, Value(EPSILON_VALUE), 0);
     define_property(vm.names.MAX_VALUE, Value(NumericLimits<double>::max()), 0);
     define_property(vm.names.MIN_VALUE, Value(NumericLimits<double>::min()), 0);
@@ -53,6 +57,7 @@ NumberConstructor::~NumberConstructor()
 {
 }
 
+// 21.1.1.1 Number ( value ), https://tc39.es/ecma262/#sec-number-constructor-number-value
 Value NumberConstructor::call()
 {
     if (!vm().argument_count())
@@ -60,6 +65,7 @@ Value NumberConstructor::call()
     return vm().argument(0).to_number(global_object());
 }
 
+// 21.1.1.1 Number ( value ), https://tc39.es/ecma262/#sec-number-constructor-number-value
 Value NumberConstructor::construct(Function&)
 {
     double number = 0;
@@ -71,21 +77,25 @@ Value NumberConstructor::construct(Function&)
     return NumberObject::create(global_object(), number);
 }
 
+// 21.1.2.2 Number.isFinite ( number ), https://tc39.es/ecma262/#sec-number.isfinite
 JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_finite)
 {
     return Value(vm.argument(0).is_finite_number());
 }
 
+// 21.1.2.3 Number.isInteger ( number ), https://tc39.es/ecma262/#sec-number.isinteger
 JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_integer)
 {
     return Value(vm.argument(0).is_integer());
 }
 
+// 21.1.2.4 Number.isNaN ( number ), https://tc39.es/ecma262/#sec-number.isnan
 JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_nan)
 {
     return Value(vm.argument(0).is_nan());
 }
 
+// 21.1.2.5 Number.isSafeInteger ( number ), https://tc39.es/ecma262/#sec-number.issafeinteger
 JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_safe_integer)
 {
     if (!vm.argument(0).is_number())
diff --git a/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp b/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
index fcf42d8721..c5304443fd 100644
--- a/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
@@ -42,7 +42,7 @@ NumberPrototype::~NumberPrototype()
 {
 }
 
-// thisNumberValue, https://tc39.es/ecma262/#thisnumbervalue
+// thisNumberValue ( value ), https://tc39.es/ecma262/#thisnumbervalue
 static Value this_number_value(GlobalObject& global_object, Value value)
 {
     if (value.is_number())
@@ -54,6 +54,7 @@ static Value this_number_value(GlobalObject& global_object, Value value)
     return {};
 }
 
+// 21.1.3.6 Number.prototype.toString ( [ radix ] ), https://tc39.es/ecma262/#sec-number.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(NumberPrototype::to_string)
 {
     auto number_value = this_number_value(global_object, vm.this_value(global_object));
@@ -131,6 +132,7 @@ JS_DEFINE_NATIVE_FUNCTION(NumberPrototype::to_string)
     return js_string(vm, String(characters.data(), characters.size()));
 }
 
+// 21.1.3.7 Number.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-number.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(NumberPrototype::value_of)
 {
     return this_number_value(global_object, vm.this_value(global_object));
diff --git a/Userland/Libraries/LibJS/Runtime/Object.cpp b/Userland/Libraries/LibJS/Runtime/Object.cpp
index d9867e51c5..f84ef98ded 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Object.cpp
@@ -111,7 +111,7 @@ const Object* Object::prototype() const
     return shape().prototype();
 }
 
-// 10.1.2.1 OrdinarySetPrototypeOf, https://tc39.es/ecma262/#sec-ordinarysetprototypeof
+// 10.1.2.1 OrdinarySetPrototypeOf ( O, V ), https://tc39.es/ecma262/#sec-ordinarysetprototypeof
 bool Object::set_prototype(Object* new_prototype)
 {
     if (prototype() == new_prototype)
@@ -157,7 +157,7 @@ bool Object::prevent_extensions()
     return true;
 }
 
-// 7.3.15 SetIntegrityLevel, https://tc39.es/ecma262/#sec-setintegritylevel
+// 7.3.15 SetIntegrityLevel ( O, level ), https://tc39.es/ecma262/#sec-setintegritylevel
 bool Object::set_integrity_level(IntegrityLevel level)
 {
     // FIXME: This feels clunky and should get nicer abstractions.
@@ -225,7 +225,7 @@ bool Object::set_integrity_level(IntegrityLevel level)
     return true;
 }
 
-// 7.3.16 TestIntegrityLevel, https://tc39.es/ecma262/#sec-testintegritylevel
+// 7.3.16 TestIntegrityLevel ( O, level ), https://tc39.es/ecma262/#sec-testintegritylevel
 bool Object::test_integrity_level(IntegrityLevel level)
 {
     auto& vm = this->vm();
@@ -369,7 +369,7 @@ MarkedValueList Object::get_own_properties(PropertyKind kind, bool only_enumerab
     return properties;
 }
 
-// 7.3.23 EnumerableOwnPropertyNames, https://tc39.es/ecma262/#sec-enumerableownpropertynames
+// 7.3.23 EnumerableOwnPropertyNames ( O, kind ), https://tc39.es/ecma262/#sec-enumerableownpropertynames
 MarkedValueList Object::get_enumerable_own_property_names(PropertyKind kind) const
 {
     return get_own_properties(kind, true, Object::GetOwnPropertyReturnType::StringOnly);
@@ -419,7 +419,7 @@ Optional<PropertyDescriptor> Object::get_own_property_descriptor(const PropertyN
 }
 
 // Equivalent to:
-// 6.2.5.4 FromPropertyDescriptor, https://tc39.es/ecma262/#sec-frompropertydescriptor
+// 6.2.5.4 FromPropertyDescriptor ( Desc ), https://tc39.es/ecma262/#sec-frompropertydescriptor
 Value Object::get_own_property_descriptor_object(const PropertyName& property_name) const
 {
     VERIFY(property_name.is_valid());
@@ -934,7 +934,7 @@ bool Object::define_native_property(const StringOrSymbol& property_name, AK::Fun
     return define_property(property_name, heap().allocate_without_global_object<NativeProperty>(move(getter), move(setter)), attribute);
 }
 
-// 20.1.2.3.1 ObjectDefineProperties, https://tc39.es/ecma262/#sec-objectdefineproperties
+// 20.1.2.3.1 ObjectDefineProperties ( O, Properties ), https://tc39.es/ecma262/#sec-objectdefineproperties
 void Object::define_properties(Value properties)
 {
     auto& vm = this->vm();
@@ -1051,7 +1051,7 @@ Value Object::ordinary_to_primitive(Value::PreferredType preferred_type) const
     return {};
 }
 
-// 20.5.8.1 InstallErrorCause, https://tc39.es/proposal-error-cause/#sec-errorobjects-install-error-cause
+// 20.5.8.1 InstallErrorCause ( O, options ), https://tc39.es/proposal-error-cause/#sec-errorobjects-install-error-cause
 void Object::install_error_cause(Value options)
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/ObjectConstructor.cpp b/Userland/Libraries/LibJS/Runtime/ObjectConstructor.cpp
index 489335fa28..54982e4bd7 100644
--- a/Userland/Libraries/LibJS/Runtime/ObjectConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ObjectConstructor.cpp
@@ -24,7 +24,10 @@ void ObjectConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 20.1.2.19 Object.prototype, https://tc39.es/ecma262/#sec-object.prototype
     define_property(vm.names.prototype, global_object.object_prototype(), 0);
+
     define_property(vm.names.length, Value(1), Attribute::Configurable);
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
@@ -54,6 +57,7 @@ ObjectConstructor::~ObjectConstructor()
 {
 }
 
+// 20.1.1.1 Object ( [ value ] ), https://tc39.es/ecma262/#sec-object-value
 Value ObjectConstructor::call()
 {
     auto value = vm().argument(0);
@@ -62,11 +66,13 @@ Value ObjectConstructor::call()
     return value.to_object(global_object());
 }
 
+// 20.1.1.1 Object ( [ value ] ), https://tc39.es/ecma262/#sec-object-value
 Value ObjectConstructor::construct(Function&)
 {
     return call();
 }
 
+// 20.1.2.10 Object.getOwnPropertyNames ( O ), https://tc39.es/ecma262/#sec-object.getownpropertynames
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_own_property_names)
 {
     auto* object = vm.argument(0).to_object(global_object);
@@ -75,6 +81,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_own_property_names)
     return Array::create_from(global_object, object->get_own_properties(PropertyKind::Key, false, GetOwnPropertyReturnType::StringOnly));
 }
 
+// 20.1.2.11 Object.getOwnPropertySymbols ( O ), https://tc39.es/ecma262/#sec-object.getownpropertysymbols
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_own_property_symbols)
 {
     auto* object = vm.argument(0).to_object(global_object);
@@ -83,6 +90,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_own_property_symbols)
     return Array::create_from(global_object, object->get_own_properties(PropertyKind::Key, false, GetOwnPropertyReturnType::SymbolOnly));
 }
 
+// 20.1.2.12 Object.getPrototypeOf ( O ), https://tc39.es/ecma262/#sec-object.getprototypeof
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_prototype_of)
 {
     auto* object = vm.argument(0).to_object(global_object);
@@ -91,6 +99,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_prototype_of)
     return object->prototype();
 }
 
+// 20.1.2.21 Object.setPrototypeOf ( O, proto ), https://tc39.es/ecma262/#sec-object.setprototypeof
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::set_prototype_of)
 {
     auto* object = vm.argument(0).to_object(global_object);
@@ -114,6 +123,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::set_prototype_of)
     return object;
 }
 
+// 20.1.2.14 Object.isExtensible ( O ), https://tc39.es/ecma262/#sec-object.isextensible
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is_extensible)
 {
     auto argument = vm.argument(0);
@@ -122,7 +132,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is_extensible)
     return Value(argument.as_object().is_extensible());
 }
 
-// 20.1.2.15 Object.isFrozen, https://tc39.es/ecma262/#sec-object.isfrozen
+// 20.1.2.15 Object.isFrozen ( O ), https://tc39.es/ecma262/#sec-object.isfrozen
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is_frozen)
 {
     auto argument = vm.argument(0);
@@ -131,7 +141,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is_frozen)
     return Value(argument.as_object().test_integrity_level(Object::IntegrityLevel::Frozen));
 }
 
-// 20.1.2.16 Object.isSealed, https://tc39.es/ecma262/#sec-object.issealed
+// 20.1.2.16 Object.isSealed ( O ), https://tc39.es/ecma262/#sec-object.issealed
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is_sealed)
 {
     auto argument = vm.argument(0);
@@ -140,6 +150,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is_sealed)
     return Value(argument.as_object().test_integrity_level(Object::IntegrityLevel::Sealed));
 }
 
+// 20.1.2.18 Object.preventExtensions ( O ), https://tc39.es/ecma262/#sec-object.preventextensions
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::prevent_extensions)
 {
     auto argument = vm.argument(0);
@@ -155,7 +166,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::prevent_extensions)
     return argument;
 }
 
-// 20.1.2.6 Object.freeze, https://tc39.es/ecma262/#sec-object.freeze
+// 20.1.2.6 Object.freeze ( O ), https://tc39.es/ecma262/#sec-object.freeze
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::freeze)
 {
     auto argument = vm.argument(0);
@@ -171,7 +182,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::freeze)
     return argument;
 }
 
-// 20.1.2.20 Object.seal, https://tc39.es/ecma262/#sec-object.seal
+// 20.1.2.20 Object.seal ( O ), https://tc39.es/ecma262/#sec-object.seal
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::seal)
 {
     auto argument = vm.argument(0);
@@ -187,6 +198,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::seal)
     return argument;
 }
 
+// 20.1.2.8 Object.getOwnPropertyDescriptor ( O, P ), https://tc39.es/ecma262/#sec-object.getownpropertydescriptor
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_own_property_descriptor)
 {
     auto* object = vm.argument(0).to_object(global_object);
@@ -198,6 +210,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::get_own_property_descriptor)
     return object->get_own_property_descriptor_object(property_key);
 }
 
+// 20.1.2.4 Object.defineProperty ( O, P, Attributes ), https://tc39.es/ecma262/#sec-object.defineproperty
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::define_property_)
 {
     if (!vm.argument(0).is_object()) {
@@ -226,7 +239,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::define_property_)
     return &object;
 }
 
-// 20.1.2.3 Object.defineProperties, https://tc39.es/ecma262/#sec-object.defineproperties
+// 20.1.2.3 Object.defineProperties ( O, Properties ), https://tc39.es/ecma262/#sec-object.defineproperties
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::define_properties)
 {
     if (!vm.argument(0).is_object()) {
@@ -241,11 +254,13 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::define_properties)
     return &object;
 }
 
+// 20.1.2.13 Object.is ( value1, value2 ), https://tc39.es/ecma262/#sec-object.is
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::is)
 {
     return Value(same_value(vm.argument(0), vm.argument(1)));
 }
 
+// 20.1.2.17 Object.keys ( O ), https://tc39.es/ecma262/#sec-object.keys
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::keys)
 {
     auto* obj_arg = vm.argument(0).to_object(global_object);
@@ -255,6 +270,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::keys)
     return Array::create_from(global_object, obj_arg->get_enumerable_own_property_names(PropertyKind::Key));
 }
 
+// 20.1.2.22 Object.values ( O ), https://tc39.es/ecma262/#sec-object.values
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::values)
 {
     auto* obj_arg = vm.argument(0).to_object(global_object);
@@ -264,6 +280,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::values)
     return Array::create_from(global_object, obj_arg->get_enumerable_own_property_names(PropertyKind::Value));
 }
 
+// 20.1.2.5 Object.entries ( O ), https://tc39.es/ecma262/#sec-object.entries
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::entries)
 {
     auto* obj_arg = vm.argument(0).to_object(global_object);
@@ -273,7 +290,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::entries)
     return Array::create_from(global_object, obj_arg->get_enumerable_own_property_names(PropertyKind::KeyAndValue));
 }
 
-// 20.1.2.2 Object.create, https://tc39.es/ecma262/#sec-object.create
+// 20.1.2.2 Object.create ( O, Properties ), https://tc39.es/ecma262/#sec-object.create
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::create)
 {
     auto prototype_value = vm.argument(0);
@@ -300,6 +317,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::create)
     return object;
 }
 
+// 1 Object.hasOwn ( O, P ), https://tc39.es/proposal-accessible-object-hasownproperty/#sec-object.hasown
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::has_own)
 {
     auto* object = vm.argument(0).to_object(global_object);
@@ -311,7 +329,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::has_own)
     return Value(object->has_own_property(property_key));
 }
 
-// 20.1.2.1 Object.assign, https://tc39.es/ecma262/#sec-object.assign
+// 20.1.2.1 Object.assign ( target, ...sources ), https://tc39.es/ecma262/#sec-object.assign
 JS_DEFINE_NATIVE_FUNCTION(ObjectConstructor::assign)
 {
     auto* to = vm.argument(0).to_object(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/ObjectPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ObjectPrototype.cpp
index 1bb29d459e..df88e1bbb1 100644
--- a/Userland/Libraries/LibJS/Runtime/ObjectPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ObjectPrototype.cpp
@@ -41,6 +41,7 @@ ObjectPrototype::~ObjectPrototype()
 {
 }
 
+// 20.1.3.2 Object.prototype.hasOwnProperty ( V ), https://tc39.es/ecma262/#sec-object.prototype.hasownproperty
 JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::has_own_property)
 {
     auto property_key = vm.argument(0).to_property_key(global_object);
@@ -52,6 +53,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::has_own_property)
     return Value(this_object->has_own_property(property_key));
 }
 
+// 20.1.3.6 Object.prototype.toString ( ), https://tc39.es/ecma262/#sec-object.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_string)
 {
     auto this_value = vm.this_value(global_object);
@@ -93,6 +95,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_string)
     return js_string(vm, String::formatted("[object {}]", tag));
 }
 
+// 20.1.3.5 Object.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] ), https://tc39.es/ecma262/#sec-object.prototype.tolocalestring
 JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_locale_string)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -101,6 +104,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::to_locale_string)
     return this_object->invoke(vm.names.toString);
 }
 
+// 20.1.3.7 Object.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-object.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::value_of)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -109,6 +113,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::value_of)
     return this_object->value_of();
 }
 
+// 20.1.3.4 Object.prototype.propertyIsEnumerable ( V ), https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable
 JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::property_is_enumerable)
 {
     auto property_key = vm.argument(0).to_property_key(global_object);
@@ -123,6 +128,7 @@ JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::property_is_enumerable)
     return Value(property_descriptor.value().attributes.is_enumerable());
 }
 
+// 20.1.3.3 Object.prototype.isPrototypeOf ( V ), https://tc39.es/ecma262/#sec-object.prototype.isprototypeof
 JS_DEFINE_NATIVE_FUNCTION(ObjectPrototype::is_prototype_of)
 {
     auto object_argument = vm.argument(0);
diff --git a/Userland/Libraries/LibJS/Runtime/Promise.cpp b/Userland/Libraries/LibJS/Runtime/Promise.cpp
index f3c76cb043..ed5be2ed35 100644
--- a/Userland/Libraries/LibJS/Runtime/Promise.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Promise.cpp
@@ -17,7 +17,7 @@
 
 namespace JS {
 
-// 27.2.4.7.1 PromiseResolve, https://tc39.es/ecma262/#sec-promise-resolve
+// 27.2.4.7.1 PromiseResolve ( C, x ), https://tc39.es/ecma262/#sec-promise-resolve
 Object* promise_resolve(GlobalObject& global_object, Object& constructor, Value value)
 {
     auto& vm = global_object.vm();
@@ -47,7 +47,7 @@ Promise::Promise(Object& prototype)
 {
 }
 
-// 27.2.1.3 CreateResolvingFunctions, https://tc39.es/ecma262/#sec-createresolvingfunctions
+// 27.2.1.3 CreateResolvingFunctions ( promise ), https://tc39.es/ecma262/#sec-createresolvingfunctions
 Promise::ResolvingFunctions Promise::create_resolving_functions()
 {
     dbgln_if(PROMISE_DEBUG, "[Promise @ {} / create_resolving_functions()]", this);
@@ -107,7 +107,7 @@ Promise::ResolvingFunctions Promise::create_resolving_functions()
     return { *resolve_function, *reject_function };
 }
 
-// 27.2.1.4 FulfillPromise, https://tc39.es/ecma262/#sec-fulfillpromise
+// 27.2.1.4 FulfillPromise ( promise, value ), https://tc39.es/ecma262/#sec-fulfillpromise
 Value Promise::fulfill(Value value)
 {
     dbgln_if(PROMISE_DEBUG, "[Promise @ {} / fulfill()]: Fulfilling promise with value {}", this, value);
@@ -121,7 +121,7 @@ Value Promise::fulfill(Value value)
     return js_undefined();
 }
 
-// 27.2.1.7 RejectPromise, https://tc39.es/ecma262/#sec-rejectpromise
+// 27.2.1.7 RejectPromise ( promise, reason ), https://tc39.es/ecma262/#sec-rejectpromise
 Value Promise::reject(Value reason)
 {
     dbgln_if(PROMISE_DEBUG, "[Promise @ {} / reject()]: Rejecting promise with reason {}", this, reason);
@@ -138,7 +138,7 @@ Value Promise::reject(Value reason)
     return js_undefined();
 }
 
-// 27.2.1.8 TriggerPromiseReactions, https://tc39.es/ecma262/#sec-triggerpromisereactions
+// 27.2.1.8 TriggerPromiseReactions ( reactions, argument ), https://tc39.es/ecma262/#sec-triggerpromisereactions
 void Promise::trigger_reactions() const
 {
     VERIFY(is_settled());
@@ -158,7 +158,7 @@ void Promise::trigger_reactions() const
     }
 }
 
-// 27.2.5.4.1 PerformPromiseThen, https://tc39.es/ecma262/#sec-performpromisethen
+// 27.2.5.4.1 PerformPromiseThen ( promise, onFulfilled, onRejected [ , resultCapability ] ), https://tc39.es/ecma262/#sec-performpromisethen
 Value Promise::perform_then(Value on_fulfilled, Value on_rejected, Optional<PromiseCapability> result_capability)
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp b/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
index fb637981e9..1c619bcb24 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
@@ -24,7 +24,9 @@ void PromiseConstructor::initialize(GlobalObject& global_object)
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
 
+    // 27.2.4.4 Promise.prototype, https://tc39.es/ecma262/#sec-promise.prototype
     define_property(vm.names.prototype, global_object.promise_prototype(), 0);
+
     define_property(vm.names.length, Value(1));
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
@@ -39,6 +41,7 @@ void PromiseConstructor::initialize(GlobalObject& global_object)
     define_native_accessor(vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
 }
 
+// 27.2.3.1 Promise ( executor ), https://tc39.es/ecma262/#sec-promise-executor
 Value PromiseConstructor::call()
 {
     auto& vm = this->vm();
@@ -46,7 +49,7 @@ Value PromiseConstructor::call()
     return {};
 }
 
-// 27.2.3.1 Promise, https://tc39.es/ecma262/#sec-promise-executor
+// 27.2.3.1 Promise ( executor ), https://tc39.es/ecma262/#sec-promise-executor
 Value PromiseConstructor::construct(Function&)
 {
     auto& vm = this->vm();
@@ -67,31 +70,31 @@ Value PromiseConstructor::construct(Function&)
     return promise;
 }
 
-// 27.2.4.1 Promise.all, https://tc39.es/ecma262/#sec-promise.all
+// 27.2.4.1 Promise.all ( iterable ), https://tc39.es/ecma262/#sec-promise.all
 JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::all)
 {
     TODO();
 }
 
-// 27.2.4.2 Promise.allSettled, https://tc39.es/ecma262/#sec-promise.allsettled
+// 27.2.4.2 Promise.allSettled ( iterable ), https://tc39.es/ecma262/#sec-promise.allsettled
 JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::all_settled)
 {
     TODO();
 }
 
-// 27.2.4.3 Promise.any, https://tc39.es/ecma262/#sec-promise.any
+// 27.2.4.3 Promise.any ( iterable ), https://tc39.es/ecma262/#sec-promise.any
 JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::any)
 {
     TODO();
 }
 
-// 27.2.4.5 Promise.race, https://tc39.es/ecma262/#sec-promise.race
+// 27.2.4.5 Promise.race ( iterable ), https://tc39.es/ecma262/#sec-promise.race
 JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::race)
 {
     TODO();
 }
 
-// 27.2.4.6 Promise.reject, https://tc39.es/ecma262/#sec-promise.reject
+// 27.2.4.6 Promise.reject ( r ), https://tc39.es/ecma262/#sec-promise.reject
 JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::reject)
 {
     auto* constructor = vm.this_value(global_object).to_object(global_object);
@@ -105,7 +108,7 @@ JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::reject)
     return promise_capability.promise;
 }
 
-// 27.2.4.7 Promise.resolve, https://tc39.es/ecma262/#sec-promise.resolve
+// 27.2.4.7 Promise.resolve ( x ), https://tc39.es/ecma262/#sec-promise.resolve
 JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::resolve)
 {
     auto* constructor = vm.this_value(global_object).to_object(global_object);
@@ -115,6 +118,7 @@ JS_DEFINE_NATIVE_FUNCTION(PromiseConstructor::resolve)
     return promise_resolve(global_object, *constructor, value);
 }
 
+// 27.2.4.8 get Promise [ @@species ], https://tc39.es/ecma262/#sec-get-promise-@@species
 JS_DEFINE_NATIVE_GETTER(PromiseConstructor::symbol_species_getter)
 {
     return vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp b/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
index f7986f3530..4aef8c5753 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
@@ -25,7 +25,7 @@ PromiseReactionJob::PromiseReactionJob(PromiseReaction& reaction, Value argument
 {
 }
 
-// 27.2.2.1 NewPromiseReactionJob, https://tc39.es/ecma262/#sec-newpromisereactionjob
+// 27.2.2.1 NewPromiseReactionJob ( reaction, argument ), https://tc39.es/ecma262/#sec-newpromisereactionjob
 Value PromiseReactionJob::call()
 {
     auto& vm = this->vm();
@@ -91,7 +91,7 @@ PromiseResolveThenableJob::PromiseResolveThenableJob(Promise& promise_to_resolve
 {
 }
 
-// 27.2.2.2 NewPromiseResolveThenableJob, https://tc39.es/ecma262/#sec-newpromiseresolvethenablejob
+// 27.2.2.2 NewPromiseResolveThenableJob ( promiseToResolve, thenable, then ), https://tc39.es/ecma262/#sec-newpromiseresolvethenablejob
 Value PromiseResolveThenableJob::call()
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp b/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp
index b1bddfed4c..a3024aa011 100644
--- a/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp
@@ -29,6 +29,8 @@ void PromisePrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.then, then, 2, attr);
     define_native_function(vm.names.catch_, catch_, 1, attr);
     define_native_function(vm.names.finally, finally, 1, attr);
+
+    // 27.2.5.5 Promise.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-promise.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Promise"), Attribute::Configurable);
 }
 
@@ -44,7 +46,7 @@ static Promise* promise_from(VM& vm, GlobalObject& global_object)
     return static_cast<Promise*>(this_object);
 }
 
-// 27.2.5.4 Promise.prototype.then, https://tc39.es/ecma262/#sec-promise.prototype.then
+// 27.2.5.4 Promise.prototype.then ( onFulfilled, onRejected ), https://tc39.es/ecma262/#sec-promise.prototype.then
 JS_DEFINE_NATIVE_FUNCTION(PromisePrototype::then)
 {
     auto* promise = promise_from(vm, global_object);
@@ -61,7 +63,7 @@ JS_DEFINE_NATIVE_FUNCTION(PromisePrototype::then)
     return promise->perform_then(on_fulfilled, on_rejected, result_capability);
 }
 
-// 27.2.5.1 Promise.prototype.catch, https://tc39.es/ecma262/#sec-promise.prototype.catch
+// 27.2.5.1 Promise.prototype.catch ( onRejected ), https://tc39.es/ecma262/#sec-promise.prototype.catch
 JS_DEFINE_NATIVE_FUNCTION(PromisePrototype::catch_)
 {
     auto* this_object = vm.this_value(global_object).to_object(global_object);
@@ -71,7 +73,7 @@ JS_DEFINE_NATIVE_FUNCTION(PromisePrototype::catch_)
     return this_object->invoke(vm.names.then, js_undefined(), on_rejected);
 }
 
-// 27.2.5.3 Promise.prototype.finally, https://tc39.es/ecma262/#sec-promise.prototype.finally
+// 27.2.5.3 Promise.prototype.finally ( onFinally ), https://tc39.es/ecma262/#sec-promise.prototype.finally
 JS_DEFINE_NATIVE_FUNCTION(PromisePrototype::finally)
 {
     auto* promise = vm.this_value(global_object).to_object(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseReaction.cpp b/Userland/Libraries/LibJS/Runtime/PromiseReaction.cpp
index 05e7593010..36f2efc64e 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseReaction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromiseReaction.cpp
@@ -11,7 +11,7 @@
 
 namespace JS {
 
-// 27.2.1.5 NewPromiseCapability, https://tc39.es/ecma262/#sec-newpromisecapability
+// 27.2.1.5 NewPromiseCapability ( C ), https://tc39.es/ecma262/#sec-newpromisecapability
 PromiseCapability new_promise_capability(GlobalObject& global_object, Value constructor)
 {
     auto& vm = global_object.vm();
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseReaction.h b/Userland/Libraries/LibJS/Runtime/PromiseReaction.h
index 70b0aefb6c..c960ba2d63 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseReaction.h
+++ b/Userland/Libraries/LibJS/Runtime/PromiseReaction.h
@@ -19,10 +19,10 @@ struct PromiseCapability {
     Function* reject;
 };
 
-// 27.2.1.5 NewPromiseCapability, https://tc39.es/ecma262/#sec-newpromisecapability
+// 27.2.1.5 NewPromiseCapability ( C ), https://tc39.es/ecma262/#sec-newpromisecapability
 PromiseCapability new_promise_capability(GlobalObject& global_object, Value constructor);
 
-// https://tc39.es/ecma262/#sec-promisereaction-records
+// 27.2.1.2 PromiseReaction Records, https://tc39.es/ecma262/#sec-promisereaction-records
 class PromiseReaction final : public Cell {
 public:
     enum class Type {
diff --git a/Userland/Libraries/LibJS/Runtime/ProxyConstructor.cpp b/Userland/Libraries/LibJS/Runtime/ProxyConstructor.cpp
index b02948d33d..2e14800e42 100644
--- a/Userland/Libraries/LibJS/Runtime/ProxyConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ProxyConstructor.cpp
@@ -13,6 +13,7 @@
 
 namespace JS {
 
+// 10.5.14 ProxyCreate ( target, handler ), https://tc39.es/ecma262/#sec-proxycreate
 static ProxyObject* proxy_create(GlobalObject& global_object, Value target, Value handler)
 {
     auto& vm = global_object.vm();
@@ -45,6 +46,7 @@ ProxyConstructor::~ProxyConstructor()
 {
 }
 
+// 28.2.1.1 Proxy ( target, handler ), https://tc39.es/ecma262/#sec-proxy-target-handler
 Value ProxyConstructor::call()
 {
     auto& vm = this->vm();
@@ -52,20 +54,21 @@ Value ProxyConstructor::call()
     return {};
 }
 
+// 28.2.1.1 Proxy ( target, handler ), https://tc39.es/ecma262/#sec-proxy-target-handler
 Value ProxyConstructor::construct(Function&)
 {
     auto& vm = this->vm();
     return proxy_create(global_object(), vm.argument(0), vm.argument(1));
 }
 
-// 28.2.2.1 Proxy.revocable, https://tc39.es/ecma262/multipage/reflection.html#sec-proxy.revocable
+// 28.2.2.1 Proxy.revocable ( target, handler ), https://tc39.es/ecma262/#sec-proxy.revocable
 JS_DEFINE_NATIVE_FUNCTION(ProxyConstructor::revocable)
 {
     auto* proxy = proxy_create(global_object, vm.argument(0), vm.argument(1));
     if (vm.exception())
         return {};
 
-    // 28.2.2.1.1 Proxy Revocation Functions, https://tc39.es/ecma262/multipage/reflection.html#sec-proxy-revocation-functions
+    // 28.2.2.1.1 Proxy Revocation Functions, https://tc39.es/ecma262/#sec-proxy-revocation-functions
     auto* revoker = NativeFunction::create(global_object, "", [proxy_handle = make_handle(proxy)](auto&, auto&) -> Value {
         auto& proxy = const_cast<ProxyObject&>(*proxy_handle.cell());
         if (proxy.is_revoked())
diff --git a/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp b/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp
index b61e99eea0..376848bcbb 100644
--- a/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp
@@ -59,6 +59,8 @@ void ReflectObject::initialize(GlobalObject& global_object)
     define_native_function(vm.names.preventExtensions, prevent_extensions, 1, attr);
     define_native_function(vm.names.set, set, 3, attr);
     define_native_function(vm.names.setPrototypeOf, set_prototype_of, 2, attr);
+
+    // 28.1.14 Reflect [ @@toStringTag ], https://tc39.es/ecma262/#sec-reflect-@@tostringtag
     Object::define_property(vm.well_known_symbol_to_string_tag(), js_string(vm.heap(), "Reflect"), Attribute::Configurable);
 }
 
@@ -66,6 +68,7 @@ ReflectObject::~ReflectObject()
 {
 }
 
+// 28.1.1 Reflect.apply ( target, thisArgument, argumentsList ), https://tc39.es/ecma262/#sec-reflect.apply
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::apply)
 {
     auto* target = get_target_function_from(global_object, "apply");
@@ -78,6 +81,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::apply)
     return vm.call(*target, this_arg, move(arguments));
 }
 
+// 28.1.2 Reflect.construct ( target, argumentsList [ , newTarget ] ), https://tc39.es/ecma262/#sec-reflect.construct
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::construct)
 {
     auto* target = get_target_function_from(global_object, "construct");
@@ -99,6 +103,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::construct)
     return vm.construct(*target, *new_target, move(arguments));
 }
 
+// 28.1.3 Reflect.defineProperty ( target, propertyKey, attributes ), https://tc39.es/ecma262/#sec-reflect.defineproperty
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::define_property)
 {
     auto* target = get_target_object_from(global_object, "defineProperty");
@@ -118,6 +123,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::define_property)
     return Value(success);
 }
 
+// 28.1.4 Reflect.deleteProperty ( target, propertyKey ), https://tc39.es/ecma262/#sec-reflect.deleteproperty
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::delete_property)
 {
     auto* target = get_target_object_from(global_object, "deleteProperty");
@@ -129,6 +135,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::delete_property)
     return Value(target->delete_property(property_key));
 }
 
+// 28.1.5 Reflect.get ( target, propertyKey [ , receiver ] ), https://tc39.es/ecma262/#sec-reflect.get
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get)
 {
     auto* target = get_target_object_from(global_object, "get");
@@ -143,6 +150,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get)
     return target->get(property_key, receiver).value_or(js_undefined());
 }
 
+// 28.1.6 Reflect.getOwnPropertyDescriptor ( target, propertyKey ), https://tc39.es/ecma262/#sec-reflect.getownpropertydescriptor
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get_own_property_descriptor)
 {
     auto* target = get_target_object_from(global_object, "getOwnPropertyDescriptor");
@@ -154,6 +162,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get_own_property_descriptor)
     return target->get_own_property_descriptor_object(property_key);
 }
 
+// 28.1.7 Reflect.getPrototypeOf ( target ), https://tc39.es/ecma262/#sec-reflect.getprototypeof
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get_prototype_of)
 {
     auto* target = get_target_object_from(global_object, "getPrototypeOf");
@@ -162,6 +171,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get_prototype_of)
     return target->prototype();
 }
 
+// 28.1.8 Reflect.has ( target, propertyKey ), https://tc39.es/ecma262/#sec-reflect.has
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::has)
 {
     auto* target = get_target_object_from(global_object, "has");
@@ -173,6 +183,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::has)
     return Value(target->has_property(property_key));
 }
 
+// 28.1.9 Reflect.isExtensible ( target ), https://tc39.es/ecma262/#sec-reflect.isextensible
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::is_extensible)
 {
     auto* target = get_target_object_from(global_object, "isExtensible");
@@ -181,6 +192,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::is_extensible)
     return Value(target->is_extensible());
 }
 
+// 28.1.10 Reflect.ownKeys ( target ), https://tc39.es/ecma262/#sec-reflect.ownkeys
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::own_keys)
 {
     auto* target = get_target_object_from(global_object, "ownKeys");
@@ -189,6 +201,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::own_keys)
     return Array::create_from(global_object, target->get_own_properties(PropertyKind::Key));
 }
 
+// 28.1.11 Reflect.preventExtensions ( target ), https://tc39.es/ecma262/#sec-reflect.preventextensions
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::prevent_extensions)
 {
     auto* target = get_target_object_from(global_object, "preventExtensions");
@@ -197,6 +210,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::prevent_extensions)
     return Value(target->prevent_extensions());
 }
 
+// 28.1.12 Reflect.set ( target, propertyKey, V [ , receiver ] ), https://tc39.es/ecma262/#sec-reflect.set
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::set)
 {
     auto* target = get_target_object_from(global_object, "set");
@@ -212,6 +226,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::set)
     return Value(target->put(property_key, value, receiver));
 }
 
+// 28.1.13 Reflect.setPrototypeOf ( target, proto ), https://tc39.es/ecma262/#sec-reflect.setprototypeof
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::set_prototype_of)
 {
     auto* target = get_target_object_from(global_object, "setPrototypeOf");
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp b/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
index f2734ff8d6..608ad3950d 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
@@ -149,9 +149,9 @@ JS_DEFINE_NATIVE_SETTER(RegExpObject::set_last_index)
     regexp_object->regex().start_offset = index;
 }
 
+// 22.2.3.2.4 RegExpCreate ( P, F ), https://tc39.es/ecma262/#sec-regexpcreate
 RegExpObject* regexp_create(GlobalObject& global_object, Value pattern, Value flags)
 {
-    // https://tc39.es/ecma262/#sec-regexpcreate
     String p;
     if (pattern.is_undefined()) {
         p = String::empty();
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
index e22e06198c..363394bcd0 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
@@ -82,6 +82,12 @@ static String escape_regexp_pattern(const RegExpObject& regexp_object)
     return pattern;
 }
 
+// 22.2.5.3 get RegExp.prototype.dotAll, https://tc39.es/ecma262/#sec-get-regexp.prototype.dotAll
+// 22.2.5.5 get RegExp.prototype.global, https://tc39.es/ecma262/#sec-get-regexp.prototype.global
+// 22.2.5.6 get RegExp.prototype.ignoreCase, https://tc39.es/ecma262/#sec-get-regexp.prototype.ignorecase
+// 22.2.5.9 get RegExp.prototype.multiline, https://tc39.es/ecma262/#sec-get-regexp.prototype.multiline
+// 22.2.5.14 get RegExp.prototype.sticky, https://tc39.es/ecma262/#sec-get-regexp.prototype.sticky
+// 22.2.5.17 get RegExp.prototype.unicode, https://tc39.es/ecma262/#sec-get-regexp.prototype.unicode
 #define __JS_ENUMERATE(flagName, flag_name, flag_char, ECMAScriptFlagName)                                 \
     JS_DEFINE_NATIVE_GETTER(RegExpPrototype::flag_name)                                                    \
     {                                                                                                      \
@@ -94,6 +100,7 @@ static String escape_regexp_pattern(const RegExpObject& regexp_object)
 JS_ENUMERATE_REGEXP_FLAGS
 #undef __JS_ENUMERATE
 
+// 22.2.5.4 get RegExp.prototype.flags, https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
 JS_DEFINE_NATIVE_GETTER(RegExpPrototype::flags)
 {
     auto this_object = this_object_from(vm, global_object);
@@ -114,6 +121,7 @@ JS_DEFINE_NATIVE_GETTER(RegExpPrototype::flags)
     return js_string(vm, builder.to_string());
 }
 
+// 22.2.5.12 get RegExp.prototype.source, https://tc39.es/ecma262/#sec-get-regexp.prototype.source
 JS_DEFINE_NATIVE_GETTER(RegExpPrototype::source)
 {
     auto this_object = this_object_from(vm, global_object);
@@ -141,6 +149,7 @@ RegexResult RegExpPrototype::do_match(const Regex<ECMA262>& re, const StringView
     return result;
 }
 
+// 22.2.5.2 RegExp.prototype.exec ( string ), https://tc39.es/ecma262/#sec-regexp.prototype.exec
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::exec)
 {
     // FIXME: This should try using dynamic properties for 'lastIndex',
@@ -194,6 +203,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::exec)
     return array;
 }
 
+// 22.2.5.15 RegExp.prototype.test ( S ), https://tc39.es/ecma262/#sec-regexp.prototype.test
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::test)
 {
     // FIXME: This should try using dynamic properties for 'exec' first,
@@ -214,6 +224,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::test)
     return Value(result.success);
 }
 
+// 22.2.5.16 RegExp.prototype.toString ( ), https://tc39.es/ecma262/#sec-regexp.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::to_string)
 {
     auto this_object = this_object_from(vm, global_object);
@@ -237,9 +248,9 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::to_string)
     return js_string(vm, String::formatted("/{}/{}", pattern, flags));
 }
 
+// 22.2.5.7 RegExp.prototype [ @@match ] ( string ), https://tc39.es/ecma262/#sec-regexp.prototype-@@match
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_match)
 {
-    // https://tc39.es/ecma262/#sec-regexp.prototype-@@match
     auto* rx = this_object_from(vm, global_object);
     if (!rx)
         return {};
@@ -262,12 +273,12 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_match)
     return vm.call(*exec, rx, js_string(vm, s));
 }
 
+// 22.2.5.10 RegExp.prototype [ @@replace ] ( string, replaceValue ), https://tc39.es/ecma262/#sec-regexp.prototype-@@replace
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
 {
     auto string_value = vm.argument(0);
     auto replace_value = vm.argument(1);
 
-    // https://tc39.es/ecma262/#sec-regexp.prototype-@@replace
     auto rx = regexp_object_from(vm, global_object);
     if (!rx)
         return {};
diff --git a/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp
index 89db9a9cf4..b1d9f3e0dd 100644
--- a/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SetIteratorPrototype.cpp
@@ -25,6 +25,8 @@ void SetIteratorPrototype::initialize(GlobalObject& global_object)
     Object::initialize(global_object);
 
     define_native_function(vm.names.next, next, 0, Attribute::Configurable | Attribute::Writable);
+
+    // 24.2.5.2.2 %SetIteratorPrototype% [ @@toStringTag ], https://tc39.es/ecma262/#sec-%setiteratorprototype%-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "Set Iterator"), Attribute::Configurable);
 }
 
@@ -32,6 +34,7 @@ SetIteratorPrototype::~SetIteratorPrototype()
 {
 }
 
+// 24.2.5.2.1 %SetIteratorPrototype%.next ( ), https://tc39.es/ecma262/#sec-%setiteratorprototype%.next
 JS_DEFINE_NATIVE_FUNCTION(SetIteratorPrototype::next)
 {
     auto this_value = vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp
index ac6c731260..ab61917fda 100644
--- a/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SetPrototype.cpp
@@ -32,7 +32,11 @@ void SetPrototype::initialize(GlobalObject& global_object)
     define_native_property(vm.names.size, size_getter, {}, attr);
 
     define_property(vm.names.keys, get(vm.names.values), attr);
+
+    // 24.2.3.11 Set.prototype [ @@iterator ] ( ), https://tc39.es/ecma262/#sec-set.prototype-@@iterator
     define_property(vm.well_known_symbol_iterator(), get(vm.names.values), attr);
+
+    // 24.2.3.12 Set.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-set.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), vm.names.Set), Attribute::Configurable);
 }
 
@@ -52,6 +56,7 @@ Set* SetPrototype::typed_this(VM& vm, GlobalObject& global_object)
     return static_cast<Set*>(this_object);
 }
 
+// 24.2.3.1 Set.prototype.add ( value ), https://tc39.es/ecma262/#sec-set.prototype.add
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::add)
 {
     auto* set = typed_this(vm, global_object);
@@ -64,6 +69,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::add)
     return set;
 }
 
+// 24.2.3.2 Set.prototype.clear ( ), https://tc39.es/ecma262/#sec-set.prototype.clear
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::clear)
 {
     auto* set = typed_this(vm, global_object);
@@ -73,6 +79,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::clear)
     return js_undefined();
 }
 
+// 24.2.3.4 Set.prototype.delete ( value ), https://tc39.es/ecma262/#sec-set.prototype.delete
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::delete_)
 {
     auto* set = typed_this(vm, global_object);
@@ -81,6 +88,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::delete_)
     return Value(set->values().remove(vm.argument(0)));
 }
 
+// 24.2.3.5 Set.prototype.entries ( ), https://tc39.es/ecma262/#sec-set.prototype.entries
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::entries)
 {
     auto* set = typed_this(vm, global_object);
@@ -90,6 +98,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::entries)
     return SetIterator::create(global_object, *set, Object::PropertyKind::KeyAndValue);
 }
 
+// 24.2.3.6 Set.prototype.forEach ( callbackfn [ , thisArg ] ), https://tc39.es/ecma262/#sec-set.prototype.foreach
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::for_each)
 {
     auto* set = typed_this(vm, global_object);
@@ -108,6 +117,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::for_each)
     return js_undefined();
 }
 
+// 24.2.3.7 Set.prototype.has ( value ), https://tc39.es/ecma262/#sec-set.prototype.has
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::has)
 {
     auto* set = typed_this(vm, global_object);
@@ -117,6 +127,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::has)
     return Value(values.find(vm.argument(0)) != values.end());
 }
 
+// 24.2.3.10 Set.prototype.values ( ), https://tc39.es/ecma262/#sec-set.prototype.values
 JS_DEFINE_NATIVE_FUNCTION(SetPrototype::values)
 {
     auto* set = typed_this(vm, global_object);
@@ -126,6 +137,7 @@ JS_DEFINE_NATIVE_FUNCTION(SetPrototype::values)
     return SetIterator::create(global_object, *set, Object::PropertyKind::Value);
 }
 
+// 24.2.3.9 get Set.prototype.size, https://tc39.es/ecma262/#sec-get-set.prototype.size
 JS_DEFINE_NATIVE_GETTER(SetPrototype::size_getter)
 {
     auto* set = typed_this(vm, global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
index f27a47be6f..ed23df20bc 100644
--- a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
@@ -23,7 +23,10 @@ void StringConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 22.1.2.3 String.prototype, https://tc39.es/ecma262/#sec-string.prototype
     define_property(vm.names.prototype, global_object.string_prototype(), 0);
+
     define_property(vm.names.length, Value(1), Attribute::Configurable);
 
     u8 attr = Attribute::Writable | Attribute::Configurable;
@@ -35,6 +38,7 @@ StringConstructor::~StringConstructor()
 {
 }
 
+// 22.1.1.1 String ( value ), https://tc39.es/ecma262/#sec-string-constructor-string-value
 Value StringConstructor::call()
 {
     if (!vm().argument_count())
@@ -47,6 +51,7 @@ Value StringConstructor::call()
     return string;
 }
 
+// 22.1.1.1 String ( value ), https://tc39.es/ecma262/#sec-string-constructor-string-value
 Value StringConstructor::construct(Function&)
 {
     PrimitiveString* primitive_string = nullptr;
@@ -59,6 +64,7 @@ Value StringConstructor::construct(Function&)
     return StringObject::create(global_object(), *primitive_string);
 }
 
+// 22.1.2.4 String.raw ( template, ...substitutions ), https://tc39.es/ecma262/#sec-string.raw
 JS_DEFINE_NATIVE_FUNCTION(StringConstructor::raw)
 {
     auto* template_object = vm.argument(0).to_object(global_object);
@@ -99,6 +105,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringConstructor::raw)
     return js_string(vm, builder.build());
 }
 
+// 22.1.2.1 String.fromCharCode ( ...codeUnits ), https://tc39.es/ecma262/#sec-string.fromcharcode
 JS_DEFINE_NATIVE_FUNCTION(StringConstructor::from_char_code)
 {
     StringBuilder builder;
diff --git a/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp
index b4b6cbaf86..8aa0163494 100644
--- a/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringIteratorPrototype.cpp
@@ -23,6 +23,8 @@ void StringIteratorPrototype::initialize(GlobalObject& global_object)
     auto& vm = this->vm();
     Object::initialize(global_object);
     define_native_function(vm.names.next, next, 0, Attribute::Configurable | Attribute::Writable);
+
+    // 22.1.5.1.2 %StringIteratorPrototype% [ @@toStringTag ], https://tc39.es/ecma262/#sec-%stringiteratorprototype%-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "String Iterator"), Attribute::Configurable);
 }
 
@@ -30,6 +32,7 @@ StringIteratorPrototype::~StringIteratorPrototype()
 {
 }
 
+// 22.1.5.1.1 %StringIteratorPrototype%.next ( ), https://tc39.es/ecma262/#sec-%stringiteratorprototype%.next
 JS_DEFINE_NATIVE_FUNCTION(StringIteratorPrototype::next)
 {
     auto this_value = vm.this_value(global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp b/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
index e3dcbc2d2a..0dddb7f8bc 100644
--- a/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
@@ -99,7 +99,7 @@ StringPrototype::~StringPrototype()
 {
 }
 
-// thisStringValue, https://tc39.es/ecma262/#thisstringvalue
+// thisStringValue ( value ), https://tc39.es/ecma262/#thisstringvalue
 static Value this_string_value(GlobalObject& global_object, Value value)
 {
     if (value.is_string())
@@ -111,6 +111,7 @@ static Value this_string_value(GlobalObject& global_object, Value value)
     return {};
 }
 
+// 22.1.3.1 String.prototype.charAt ( pos ), https://tc39.es/ecma262/#sec-string.prototype.charat
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::char_at)
 {
     auto string = ak_string_from(vm, global_object);
@@ -128,6 +129,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::char_at)
     return js_string(vm, string.substring(index, 1));
 }
 
+// 22.1.3.2 String.prototype.charCodeAt ( pos ), https://tc39.es/ecma262/#sec-string.prototype.charcodeat
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::char_code_at)
 {
     auto string = ak_string_from(vm, global_object);
@@ -145,6 +147,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::char_code_at)
     return Value((i32)string[index]);
 }
 
+// 22.1.3.16 String.prototype.repeat ( count ), https://tc39.es/ecma262/#sec-string.prototype.repeat
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::repeat)
 {
     auto string = ak_string_from(vm, global_object);
@@ -169,6 +172,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::repeat)
     return js_string(vm, builder.to_string());
 }
 
+// 22.1.3.22 String.prototype.startsWith ( searchString [ , position ] ), https://tc39.es/ecma262/#sec-string.prototype.startswith
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::starts_with)
 {
     auto string = ak_string_from(vm, global_object);
@@ -205,6 +209,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::starts_with)
     return Value(string.substring(start, search_string_length) == search_string);
 }
 
+// 22.1.3.6 String.prototype.endsWith ( searchString [ , endPosition ] ), https://tc39.es/ecma262/#sec-string.prototype.endswith
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::ends_with)
 {
     auto string = ak_string_from(vm, global_object);
@@ -247,6 +252,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::ends_with)
     return Value(string.substring(start, search_string_length) == search_string);
 }
 
+// 22.1.3.8 String.prototype.indexOf ( searchString [ , position ] ), https://tc39.es/ecma262/#sec-string.prototype.indexof
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::index_of)
 {
     auto string = ak_string_from(vm, global_object);
@@ -258,6 +264,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::index_of)
     return Value((i32)string.find(needle).value_or(-1));
 }
 
+// 22.1.3.26 String.prototype.toLowerCase ( ), https://tc39.es/ecma262/#sec-string.prototype.tolowercase
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::to_lowercase)
 {
     auto string = ak_string_from(vm, global_object);
@@ -266,6 +273,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::to_lowercase)
     return js_string(vm, string.to_lowercase());
 }
 
+// 22.1.3.28 String.prototype.toUpperCase ( ), https://tc39.es/ecma262/#sec-string.prototype.touppercase
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::to_uppercase)
 {
     auto string = ak_string_from(vm, global_object);
@@ -274,11 +282,13 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::to_uppercase)
     return js_string(vm, string.to_uppercase());
 }
 
+// 22.1.3.27 String.prototype.toString ( ), https://tc39.es/ecma262/#sec-string.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::to_string)
 {
     return this_string_value(global_object, vm.this_value(global_object));
 }
 
+// 22.1.3.32 String.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-string.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::value_of)
 {
     return this_string_value(global_object, vm.this_value(global_object));
@@ -289,6 +299,7 @@ enum class PadPlacement {
     End,
 };
 
+// 22.1.3.15.1 StringPad ( O, maxLength, fillString, placement ), https://tc39.es/ecma262/#sec-stringpad
 static Value pad_string(GlobalObject& global_object, const String& string, PadPlacement placement)
 {
     auto& vm = global_object.vm();
@@ -320,6 +331,7 @@ static Value pad_string(GlobalObject& global_object, const String& string, PadPl
     return js_string(vm, formatted);
 }
 
+// 22.1.3.15 String.prototype.padStart ( maxLength [ , fillString ] ), https://tc39.es/ecma262/#sec-string.prototype.padstart
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::pad_start)
 {
     auto string = ak_string_from(vm, global_object);
@@ -328,6 +340,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::pad_start)
     return pad_string(global_object, string, PadPlacement::Start);
 }
 
+// 22.1.3.14 String.prototype.padEnd ( maxLength [ , fillString ] ), https://tc39.es/ecma262/#sec-string.prototype.padend
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::pad_end)
 {
     auto string = ak_string_from(vm, global_object);
@@ -336,6 +349,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::pad_end)
     return pad_string(global_object, string, PadPlacement::End);
 }
 
+// 22.1.3.29 String.prototype.trim ( ), https://tc39.es/ecma262/#sec-string.prototype.trim
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::trim)
 {
     auto string = ak_string_from(vm, global_object);
@@ -344,6 +358,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::trim)
     return js_string(vm, string.trim_whitespace(TrimMode::Both));
 }
 
+// 22.1.3.31 String.prototype.trimStart ( ), https://tc39.es/ecma262/#sec-string.prototype.trimstart
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::trim_start)
 {
     auto string = ak_string_from(vm, global_object);
@@ -352,6 +367,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::trim_start)
     return js_string(vm, string.trim_whitespace(TrimMode::Left));
 }
 
+// 22.1.3.30 String.prototype.trimEnd ( ), https://tc39.es/ecma262/#sec-string.prototype.trimend
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::trim_end)
 {
     auto string = ak_string_from(vm, global_object);
@@ -360,6 +376,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::trim_end)
     return js_string(vm, string.trim_whitespace(TrimMode::Right));
 }
 
+// 22.1.3.23 String.prototype.substring ( start, end ), https://tc39.es/ecma262/#sec-string.prototype.substring
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::concat)
 {
     auto string = ak_string_from(vm, global_object);
@@ -376,6 +393,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::concat)
     return js_string(vm, builder.to_string());
 }
 
+// 22.1.3.23 String.prototype.substring ( start, end ), https://tc39.es/ecma262/#sec-string.prototype.substring
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::substring)
 {
     auto string = ak_string_from(vm, global_object);
@@ -414,6 +432,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::substring)
     return js_string(vm, string_part);
 }
 
+// B.2.3.1 String.prototype.substr ( start, length ), https://tc39.es/ecma262/#sec-string.prototype.substr
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::substr)
 {
     auto string = ak_string_from(vm, global_object);
@@ -451,6 +470,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::substr)
     return js_string(vm, string_part);
 }
 
+// 22.1.3.7 String.prototype.includes ( searchString [ , position ] ), https://tc39.es/ecma262/#sec-string.prototype.includes
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::includes)
 {
     auto string = ak_string_from(vm, global_object);
@@ -475,6 +495,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::includes)
     return Value(substring_search.contains(search_string));
 }
 
+// 22.1.3.20 String.prototype.slice ( start, end ), https://tc39.es/ecma262/#sec-string.prototype.slice
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::slice)
 {
     auto string = ak_string_from(vm, global_object);
@@ -519,6 +540,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::slice)
     return js_string(vm, string_part);
 }
 
+// 22.1.3.21 String.prototype.split ( separator, limit ), https://tc39.es/ecma262/#sec-string.prototype.split
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::split)
 {
     // FIXME Implement the @@split part
@@ -587,6 +609,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::split)
     return result;
 }
 
+// 22.1.3.9 String.prototype.lastIndexOf ( searchString [ , position ] ), https://tc39.es/ecma262/#sec-string.prototype.lastindexof
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::last_index_of)
 {
     auto string = ak_string_from(vm, global_object);
@@ -619,6 +642,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::last_index_of)
     return Value(-1);
 }
 
+// 3.1 String.prototype.at ( index ), https://tc39.es/proposal-relative-indexing-method/#sec-string.prototype.at
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::at)
 {
     auto string = ak_string_from(vm, global_object);
@@ -642,6 +666,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::at)
     return js_string(vm, String::formatted("{}", string[index.value()]));
 }
 
+// 22.1.3.33 String.prototype [ @@iterator ] ( ), https://tc39.es/ecma262/#sec-string.prototype-@@iterator
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::symbol_iterator)
 {
     auto this_object = require_object_coercible(global_object, vm.this_value(global_object));
@@ -653,9 +678,9 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::symbol_iterator)
     return StringIterator::create(global_object, string);
 }
 
+// 22.1.3.11 String.prototype.match ( regexp ), https://tc39.es/ecma262/#sec-string.prototype.match
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::match)
 {
-    // https://tc39.es/ecma262/#sec-string.prototype.match
     auto this_object = require_object_coercible(global_object, vm.this_value(global_object));
     if (vm.exception())
         return {};
@@ -673,9 +698,9 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::match)
     return rx->invoke(vm.well_known_symbol_match(), js_string(vm, s));
 }
 
+// 22.1.3.17 String.prototype.replace ( searchValue, replaceValue ), https://tc39.es/ecma262/#sec-string.prototype.replace
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::replace)
 {
-    // https://tc39.es/ecma262/#sec-string.prototype.replace
     auto this_object = require_object_coercible(global_object, vm.this_value(global_object));
     if (vm.exception())
         return {};
@@ -723,7 +748,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::replace)
     return js_string(vm, builder.build());
 }
 
-// B.2.3.2.1
+// B.2.3.2.1 CreateHTML ( string, tag, attribute, value ), https://tc39.es/ecma262/#sec-createhtml
 static Value create_html(GlobalObject& global_object, Value string, const String& tag, const String& attribute, Value value)
 {
     auto& vm = global_object.vm();
@@ -755,66 +780,79 @@ static Value create_html(GlobalObject& global_object, Value string, const String
     return js_string(vm, builder.build());
 }
 
+// B.2.3.2 String.prototype.anchor ( name ), https://tc39.es/ecma262/#sec-string.prototype.anchor
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::anchor)
 {
     return create_html(global_object, vm.this_value(global_object), "a", "name", vm.argument(0));
 }
 
+// B.2.3.3 String.prototype.big ( ), https://tc39.es/ecma262/#sec-string.prototype.big
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::big)
 {
     return create_html(global_object, vm.this_value(global_object), "big", String::empty(), Value());
 }
 
+// B.2.3.4 String.prototype.blink ( ), https://tc39.es/ecma262/#sec-string.prototype.blink
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::blink)
 {
     return create_html(global_object, vm.this_value(global_object), "blink", String::empty(), Value());
 }
 
+// B.2.3.5 String.prototype.bold ( ), https://tc39.es/ecma262/#sec-string.prototype.bold
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::bold)
 {
     return create_html(global_object, vm.this_value(global_object), "b", String::empty(), Value());
 }
 
+// B.2.3.6 String.prototype.fixed ( ), https://tc39.es/ecma262/#sec-string.prototype.fixed
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::fixed)
 {
     return create_html(global_object, vm.this_value(global_object), "tt", String::empty(), Value());
 }
 
+// B.2.3.7 String.prototype.fontcolor ( color ), https://tc39.es/ecma262/#sec-string.prototype.fontcolor
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::fontcolor)
 {
     return create_html(global_object, vm.this_value(global_object), "font", "color", vm.argument(0));
 }
 
+// B.2.3.8 String.prototype.fontsize ( size ), https://tc39.es/ecma262/#sec-string.prototype.fontsize
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::fontsize)
 {
     return create_html(global_object, vm.this_value(global_object), "font", "size", vm.argument(0));
 }
 
+// B.2.3.9 String.prototype.italics ( ), https://tc39.es/ecma262/#sec-string.prototype.italics
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::italics)
 {
     return create_html(global_object, vm.this_value(global_object), "i", String::empty(), Value());
 }
 
+// B.2.3.10 String.prototype.link ( url ), https://tc39.es/ecma262/#sec-string.prototype.link
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::link)
 {
     return create_html(global_object, vm.this_value(global_object), "a", "href", vm.argument(0));
 }
 
+// B.2.3.11 String.prototype.small ( ), https://tc39.es/ecma262/#sec-string.prototype.small
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::small)
 {
     return create_html(global_object, vm.this_value(global_object), "small", String::empty(), Value());
 }
 
+// B.2.3.12 String.prototype.strike ( ), https://tc39.es/ecma262/#sec-string.prototype.strike
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::strike)
 {
     return create_html(global_object, vm.this_value(global_object), "strike", String::empty(), Value());
 }
 
+// B.2.3.13 String.prototype.sub ( ), https://tc39.es/ecma262/#sec-string.prototype.sub
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::sub)
 {
     return create_html(global_object, vm.this_value(global_object), "sub", String::empty(), Value());
 }
 
+// B.2.3.14 String.prototype.sup ( ), https://tc39.es/ecma262/#sec-string.prototype.sup
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::sup)
 {
     return create_html(global_object, vm.this_value(global_object), "sup", String::empty(), Value());
diff --git a/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp b/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
index 3d50ca8d90..cb2a98e7e5 100644
--- a/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
@@ -19,7 +19,10 @@ void SymbolConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 20.4.2.9 Symbol.prototype, https://tc39.es/ecma262/#sec-symbol.prototype
     define_property(vm.names.prototype, global_object.symbol_prototype(), 0);
+
     define_property(vm.names.length, Value(0), Attribute::Configurable);
 
     define_native_function(vm.names.for_, for_, 1, Attribute::Writable | Attribute::Configurable);
@@ -35,6 +38,7 @@ SymbolConstructor::~SymbolConstructor()
 {
 }
 
+// 20.4.1.1 Symbol ( [ description ] ), https://tc39.es/ecma262/#sec-symbol-description
 Value SymbolConstructor::call()
 {
     if (!vm().argument_count())
@@ -42,12 +46,14 @@ Value SymbolConstructor::call()
     return js_symbol(heap(), vm().argument(0).to_string(global_object()), false);
 }
 
+// 20.4.1.1 Symbol ( [ description ] ), https://tc39.es/ecma262/#sec-symbol-description
 Value SymbolConstructor::construct(Function&)
 {
     vm().throw_exception<TypeError>(global_object(), ErrorType::NotAConstructor, "Symbol");
     return {};
 }
 
+// 20.4.2.2 Symbol.for ( key ), https://tc39.es/ecma262/#sec-symbol.for
 JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::for_)
 {
     String description;
@@ -60,6 +66,7 @@ JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::for_)
     return global_object.vm().get_global_symbol(description);
 }
 
+// 20.4.2.6 Symbol.keyFor ( sym ), https://tc39.es/ecma262/#sec-symbol.keyfor
 JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::key_for)
 {
     auto argument = vm.argument(0);
diff --git a/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
index aba05876af..a77dacf970 100644
--- a/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
@@ -30,6 +30,8 @@ void SymbolPrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.toString, to_string, 0, Attribute::Writable | Attribute::Configurable);
     define_native_function(vm.names.valueOf, value_of, 0, Attribute::Writable | Attribute::Configurable);
     define_native_function(vm.well_known_symbol_to_primitive(), symbol_to_primitive, 1, Attribute::Configurable);
+
+    // 20.4.3.6 Symbol.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-symbol.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), "Symbol"), Attribute::Configurable);
 }
 
@@ -37,7 +39,7 @@ SymbolPrototype::~SymbolPrototype()
 {
 }
 
-// thisSymbolValue, https://tc39.es/ecma262/#thissymbolvalue
+// thisSymbolValue ( value ), https://tc39.es/ecma262/#thissymbolvalue
 static Value this_symbol_value(GlobalObject& global_object, Value value)
 {
     if (value.is_symbol())
@@ -49,6 +51,7 @@ static Value this_symbol_value(GlobalObject& global_object, Value value)
     return {};
 }
 
+// 20.4.3.2 get Symbol.prototype.description, https://tc39.es/ecma262/#sec-symbol.prototype.description
 JS_DEFINE_NATIVE_GETTER(SymbolPrototype::description_getter)
 {
     auto symbol_value = this_symbol_value(global_object, vm.this_value(global_object));
@@ -57,6 +60,7 @@ JS_DEFINE_NATIVE_GETTER(SymbolPrototype::description_getter)
     return js_string(vm, symbol_value.as_symbol().description());
 }
 
+// 20.4.3.3 Symbol.prototype.toString ( ), https://tc39.es/ecma262/#sec-symbol.prototype.tostring
 JS_DEFINE_NATIVE_FUNCTION(SymbolPrototype::to_string)
 {
     auto symbol_value = this_symbol_value(global_object, vm.this_value(global_object));
@@ -65,11 +69,13 @@ JS_DEFINE_NATIVE_FUNCTION(SymbolPrototype::to_string)
     return js_string(vm, symbol_value.as_symbol().to_string());
 }
 
+// 20.4.3.4 Symbol.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-symbol.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(SymbolPrototype::value_of)
 {
     return this_symbol_value(global_object, vm.this_value(global_object));
 }
 
+// 20.4.3.5 Symbol.prototype [ @@toPrimitive ] ( hint ), https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive
 JS_DEFINE_NATIVE_FUNCTION(SymbolPrototype::symbol_to_primitive)
 {
     // The hint argument is ignored.
diff --git a/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp b/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
index 63c4da2158..eb10d24ace 100644
--- a/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
@@ -45,6 +45,7 @@ static TypedArrayBase* typed_array_from(VM& vm, GlobalObject& global_object)
     return static_cast<TypedArrayBase*>(this_object);
 }
 
+// 23.2.3.18 get %TypedArray%.prototype.length, https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.length
 JS_DEFINE_NATIVE_GETTER(TypedArrayPrototype::length_getter)
 {
     auto typed_array = typed_array_from(vm, global_object);
@@ -57,6 +58,7 @@ JS_DEFINE_NATIVE_GETTER(TypedArrayPrototype::length_getter)
     return Value(typed_array->array_length());
 }
 
+// 4.1 %TypedArray%.prototype.at ( index ), https://tc39.es/proposal-relative-indexing-method/#sec-%typedarray%.prototype.at
 JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::at)
 {
     auto typed_array = typed_array_from(vm, global_object);
@@ -80,7 +82,7 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::at)
     return typed_array->get(index.value());
 }
 
-// https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.buffer
+// 23.2.3.1 get %TypedArray%.prototype.buffer, https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.buffer
 JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::buffer_getter)
 {
     auto typed_array = typed_array_from(vm, global_object);
@@ -91,7 +93,7 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::buffer_getter)
     return Value(array_buffer);
 }
 
-// https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.bytelength
+// 23.2.3.2 get %TypedArray%.prototype.byteLength, https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.bytelength
 JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::byte_length_getter)
 {
     auto typed_array = typed_array_from(vm, global_object);
@@ -104,7 +106,7 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::byte_length_getter)
     return Value(typed_array->byte_length());
 }
 
-// https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.byteoffset
+// 23.2.3.3 get %TypedArray%.prototype.byteOffset, https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.byteoffset
 JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::byte_offset_getter)
 {
     auto typed_array = typed_array_from(vm, global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index 34dec185b9..558dc48cd3 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -551,13 +551,13 @@ void VM::run_queued_promise_jobs()
     VERIFY(!m_exception);
 }
 
-// 9.4.4 HostEnqueuePromiseJob, https://tc39.es/ecma262/#sec-hostenqueuepromisejob
+// 9.5.4 HostEnqueuePromiseJob ( job, realm ), https://tc39.es/ecma262/#sec-hostenqueuepromisejob
 void VM::enqueue_promise_job(NativeFunction& job)
 {
     m_promise_jobs.append(&job);
 }
 
-// 27.2.1.9 HostPromiseRejectionTracker, https://tc39.es/ecma262/#sec-host-promise-rejection-tracker
+// 27.2.1.9 HostPromiseRejectionTracker ( promise, operation ), https://tc39.es/ecma262/#sec-host-promise-rejection-tracker
 void VM::promise_rejection_tracker(const Promise& promise, Promise::RejectionOperation operation) const
 {
     switch (operation) {
diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index ded9689eaf..fd8752ef5c 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -70,9 +70,9 @@ ALWAYS_INLINE bool both_bigint(const Value& lhs, const Value& rhs)
     return lhs.is_bigint() && rhs.is_bigint();
 }
 
+// 6.1.6.1.20 Number::toString ( x ), https://tc39.es/ecma262/#sec-numeric-types-number-tostring
 static String double_to_string(double d)
 {
-    // https://tc39.es/ecma262/#sec-numeric-types-number-tostring
     if (isnan(d))
         return "NaN";
     if (d == +0.0 || d == -0.0)
@@ -198,7 +198,7 @@ static String double_to_string(double d)
     return builder.to_string();
 }
 
-// 7.2.2 IsArray, https://tc39.es/ecma262/#sec-isarray
+// 7.2.2 IsArray ( argument ), https://tc39.es/ecma262/#sec-isarray
 bool Value::is_array(GlobalObject& global_object) const
 {
     if (!is_object())
@@ -224,6 +224,7 @@ Array& Value::as_array()
     return static_cast<Array&>(*m_value.as_object);
 }
 
+// 7.2.3 IsCallable ( argument ), https://tc39.es/ecma262/#sec-iscallable
 bool Value::is_function() const
 {
     return is_object() && as_object().is_function();
@@ -235,7 +236,7 @@ Function& Value::as_function()
     return static_cast<Function&>(as_object());
 }
 
-// 7.2.4 IsConstructor, https://tc39.es/ecma262/#sec-isconstructor
+// 7.2.4 IsConstructor ( argument ), https://tc39.es/ecma262/#sec-isconstructor
 bool Value::is_constructor() const
 {
     if (!is_function())
@@ -246,7 +247,7 @@ bool Value::is_constructor() const
     return true;
 }
 
-// 7.2.8 IsRegExp, https://tc39.es/ecma262/#sec-isregexp
+// 7.2.8 IsRegExp ( argument ), https://tc39.es/ecma262/#sec-isregexp
 bool Value::is_regexp(GlobalObject& global_object) const
 {
     if (!is_object())
@@ -261,6 +262,7 @@ bool Value::is_regexp(GlobalObject& global_object) const
     return is<RegExpObject>(as_object());
 }
 
+// 13.5.3 The typeof Operator, https://tc39.es/ecma262/#sec-typeof-operator
 String Value::typeof() const
 {
     switch (m_type) {
@@ -328,6 +330,7 @@ PrimitiveString* Value::to_primitive_string(GlobalObject& global_object)
     return js_string(global_object.heap(), string);
 }
 
+// 7.1.17 ToString ( argument ), https://tc39.es/ecma262/#sec-tostring
 String Value::to_string(GlobalObject& global_object, bool legacy_null_to_empty_string) const
 {
     switch (m_type) {
@@ -359,6 +362,7 @@ String Value::to_string(GlobalObject& global_object, bool legacy_null_to_empty_s
     }
 }
 
+// 7.1.2 ToBoolean ( argument ), https://tc39.es/ecma262/#sec-toboolean
 bool Value::to_boolean() const
 {
     switch (m_type) {
@@ -386,6 +390,7 @@ bool Value::to_boolean() const
     }
 }
 
+// 7.1.1 ToPrimitive ( input [ , preferredType ] ), https://tc39.es/ecma262/#sec-toprimitive
 Value Value::to_primitive(GlobalObject& global_object, PreferredType preferred_type) const
 {
     auto get_hint_for_preferred_type = [&]() -> String {
@@ -422,6 +427,7 @@ Value Value::to_primitive(GlobalObject& global_object, PreferredType preferred_t
     return *this;
 }
 
+// 7.1.18 ToObject ( argument ), https://tc39.es/ecma262/#sec-toobject
 Object* Value::to_object(GlobalObject& global_object) const
 {
     switch (m_type) {
@@ -448,6 +454,7 @@ Object* Value::to_object(GlobalObject& global_object) const
     }
 }
 
+// 7.1.3 ToNumeric ( value ), https://tc39.es/ecma262/#sec-tonumeric
 FLATTEN Value Value::to_numeric(GlobalObject& global_object) const
 {
     auto primitive = to_primitive(global_object, Value::PreferredType::Number);
@@ -458,6 +465,7 @@ FLATTEN Value Value::to_numeric(GlobalObject& global_object) const
     return primitive.to_number(global_object);
 }
 
+// 7.1.4 ToNumber ( argument ), https://tc39.es/ecma262/#sec-tonumber
 Value Value::to_number(GlobalObject& global_object) const
 {
     switch (m_type) {
@@ -501,6 +509,7 @@ Value Value::to_number(GlobalObject& global_object) const
     }
 }
 
+// 7.1.13 ToBigInt ( argument ), https://tc39.es/ecma262/#sec-tobigint
 BigInt* Value::to_bigint(GlobalObject& global_object) const
 {
     auto& vm = global_object.vm();
@@ -560,6 +569,7 @@ double Value::to_double(GlobalObject& global_object) const
     return number.as_double();
 }
 
+// 7.1.19 ToPropertyKey ( argument ), https://tc39.es/ecma262/#sec-topropertykey
 StringOrSymbol Value::to_property_key(GlobalObject& global_object) const
 {
     auto key = to_primitive(global_object, PreferredType::String);
@@ -590,9 +600,9 @@ i32 Value::to_i32_slow_case(GlobalObject& global_object) const
     return static_cast<i32>(int32bit);
 }
 
+// 7.1.7 ToUint32 ( argument ), https://tc39.es/ecma262/#sec-touint32
 u32 Value::to_u32(GlobalObject& global_object) const
 {
-    // 7.1.7 ToUint32, https://tc39.es/ecma262/#sec-touint32
     auto number = to_number(global_object);
     if (global_object.vm().exception())
         return INVALID;
@@ -606,10 +616,9 @@ u32 Value::to_u32(GlobalObject& global_object) const
     return static_cast<u32>(int32bit);
 }
 
+// 7.1.20 ToLength ( argument ), https://tc39.es/ecma262/#sec-tolength
 size_t Value::to_length(GlobalObject& global_object) const
 {
-    // 7.1.20 ToLength, https://tc39.es/ecma262/#sec-tolength
-
     auto& vm = global_object.vm();
 
     auto len = to_integer_or_infinity(global_object);
@@ -620,10 +629,9 @@ size_t Value::to_length(GlobalObject& global_object) const
     return min(len, MAX_ARRAY_LIKE_INDEX);
 }
 
+// 7.1.22 ToIndex ( argument ), https://tc39.es/ecma262/#sec-toindex
 size_t Value::to_index(GlobalObject& global_object) const
 {
-    // 7.1.22 ToIndex, https://tc39.es/ecma262/#sec-toindex
-
     auto& vm = global_object.vm();
 
     if (is_undefined())
@@ -644,10 +652,9 @@ size_t Value::to_index(GlobalObject& global_object) const
     return index;
 }
 
+// 7.1.5 ToIntegerOrInfinity ( argument ), https://tc39.es/ecma262/#sec-tointegerorinfinity
 double Value::to_integer_or_infinity(GlobalObject& global_object) const
 {
-    // 7.1.5 ToIntegerOrInfinity, https://tc39.es/ecma262/#sec-tointegerorinfinity
-
     auto& vm = global_object.vm();
 
     auto number = to_number(global_object);
@@ -663,6 +670,7 @@ double Value::to_integer_or_infinity(GlobalObject& global_object) const
     return integer;
 }
 
+// 13.10 Relational Operators, https://tc39.es/ecma262/#sec-relational-operators
 Value greater_than(GlobalObject& global_object, Value lhs, Value rhs)
 {
     TriState relation = abstract_relation(global_object, false, lhs, rhs);
@@ -671,6 +679,7 @@ Value greater_than(GlobalObject& global_object, Value lhs, Value rhs)
     return Value(relation == TriState::True);
 }
 
+// 13.10 Relational Operators, https://tc39.es/ecma262/#sec-relational-operators
 Value greater_than_equals(GlobalObject& global_object, Value lhs, Value rhs)
 {
     TriState relation = abstract_relation(global_object, true, lhs, rhs);
@@ -679,6 +688,7 @@ Value greater_than_equals(GlobalObject& global_object, Value lhs, Value rhs)
     return Value(true);
 }
 
+// 13.10 Relational Operators, https://tc39.es/ecma262/#sec-relational-operators
 Value less_than(GlobalObject& global_object, Value lhs, Value rhs)
 {
     TriState relation = abstract_relation(global_object, true, lhs, rhs);
@@ -687,6 +697,7 @@ Value less_than(GlobalObject& global_object, Value lhs, Value rhs)
     return Value(relation == TriState::True);
 }
 
+// 13.10 Relational Operators, https://tc39.es/ecma262/#sec-relational-operators
 Value less_than_equals(GlobalObject& global_object, Value lhs, Value rhs)
 {
     TriState relation = abstract_relation(global_object, false, lhs, rhs);
@@ -695,6 +706,7 @@ Value less_than_equals(GlobalObject& global_object, Value lhs, Value rhs)
     return Value(true);
 }
 
+// 13.12 Binary Bitwise Operators, https://tc39.es/ecma262/#sec-binary-bitwise-operators
 Value bitwise_and(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -714,6 +726,7 @@ Value bitwise_and(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.12 Binary Bitwise Operators, https://tc39.es/ecma262/#sec-binary-bitwise-operators
 Value bitwise_or(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -737,6 +750,7 @@ Value bitwise_or(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.12 Binary Bitwise Operators, https://tc39.es/ecma262/#sec-binary-bitwise-operators
 Value bitwise_xor(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -760,6 +774,7 @@ Value bitwise_xor(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.5.6 Bitwise NOT Operator ( ~ ), https://tc39.es/ecma262/#sec-bitwise-not-operator
 Value bitwise_not(GlobalObject& global_object, Value lhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -773,11 +788,13 @@ Value bitwise_not(GlobalObject& global_object, Value lhs)
     return js_bigint(global_object.heap(), big_integer_bitwise_not);
 }
 
+// 13.5.4 Unary + Operator, https://tc39.es/ecma262/#sec-unary-plus-operator
 Value unary_plus(GlobalObject& global_object, Value lhs)
 {
     return lhs.to_number(global_object);
 }
 
+// 13.5.5 Unary - Operator, https://tc39.es/ecma262/#sec-unary-minus-operator
 Value unary_minus(GlobalObject& global_object, Value lhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -795,10 +812,9 @@ Value unary_minus(GlobalObject& global_object, Value lhs)
     return js_bigint(global_object.heap(), big_integer_negated);
 }
 
+// 13.9.1 The Left Shift Operator ( << ), https://tc39.es/ecma262/#sec-left-shift-operator
 Value left_shift(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    // 6.1.6.1.9 Number::leftShift
-    // https://tc39.es/ecma262/#sec-numeric-types-number-leftShift
     auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
@@ -826,10 +842,9 @@ Value left_shift(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.9.2 The Signed Right Shift Operator ( >> ), https://tc39.es/ecma262/#sec-signed-right-shift-operator
 Value right_shift(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    // 6.1.6.1.11 Number::signedRightShift
-    // https://tc39.es/ecma262/#sec-numeric-types-number-signedRightShift
     auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
@@ -841,7 +856,6 @@ Value right_shift(GlobalObject& global_object, Value lhs, Value rhs)
             return Value(0);
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
-        // Ok, so this performs toNumber() again but that "can't" throw
         auto lhs_i32 = lhs_numeric.to_i32(global_object);
         auto rhs_u32 = rhs_numeric.to_u32(global_object);
         return Value(lhs_i32 >> rhs_u32);
@@ -855,10 +869,9 @@ Value right_shift(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.9.3 The Unsigned Right Shift Operator ( >>> ), https://tc39.es/ecma262/#sec-unsigned-right-shift-operator
 Value unsigned_right_shift(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    // 6.1.6.1.11 Number::unsignedRightShift
-    // https://tc39.es/ecma262/#sec-numeric-types-number-unsignedRightShift
     auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
@@ -879,6 +892,7 @@ Value unsigned_right_shift(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.8.1 The Addition Operator ( + ), https://tc39.es/ecma262/#sec-addition-operator-plus
 Value add(GlobalObject& global_object, Value lhs, Value rhs)
 {
     if (both_number(lhs, rhs)) {
@@ -926,6 +940,7 @@ Value add(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.8.2 The Subtraction Operator ( - ), https://tc39.es/ecma262/#sec-subtraction-operator-minus
 Value sub(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -942,6 +957,7 @@ Value sub(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.7 Multiplicative Operators, https://tc39.es/ecma262/#sec-multiplicative-operators
 Value mul(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto lhs_numeric = lhs.to_numeric(global_object);
@@ -958,6 +974,7 @@ Value mul(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.7 Multiplicative Operators, https://tc39.es/ecma262/#sec-multiplicative-operators
 Value div(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto& vm = global_object.vm();
@@ -980,6 +997,7 @@ Value div(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.7 Multiplicative Operators, https://tc39.es/ecma262/#sec-multiplicative-operators
 Value mod(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto& vm = global_object.vm();
@@ -1008,6 +1026,7 @@ Value mod(GlobalObject& global_object, Value lhs, Value rhs)
     return {};
 }
 
+// 13.6 Exponentiation Operator, https://tc39.es/ecma262/#sec-exp-operator
 Value exp(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto& vm = global_object.vm();
@@ -1042,6 +1061,7 @@ Value in(GlobalObject& global_object, Value lhs, Value rhs)
     return Value(rhs.as_object().has_property(lhs_property_key));
 }
 
+// 13.10.2 InstanceofOperator ( V, target ), https://tc39.es/ecma262/#sec-instanceofoperator
 Value instance_of(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto& vm = global_object.vm();
@@ -1100,6 +1120,7 @@ Value ordinary_has_instance(GlobalObject& global_object, Value lhs, Value rhs)
     }
 }
 
+// 7.2.10 SameValue ( x, y ), https://tc39.es/ecma262/#sec-samevalue
 bool same_value(Value lhs, Value rhs)
 {
     if (!same_type_for_equality(lhs, rhs))
@@ -1126,6 +1147,7 @@ bool same_value(Value lhs, Value rhs)
     return same_value_non_numeric(lhs, rhs);
 }
 
+// 7.2.11 SameValueZero ( x, y ), https://tc39.es/ecma262/#sec-samevaluezero
 bool same_value_zero(Value lhs, Value rhs)
 {
     if (!same_type_for_equality(lhs, rhs))
@@ -1143,6 +1165,7 @@ bool same_value_zero(Value lhs, Value rhs)
     return same_value_non_numeric(lhs, rhs);
 }
 
+// 7.2.12 SameValueNonNumeric ( x, y ), https://tc39.es/ecma262/#sec-samevaluenonnumeric
 bool same_value_non_numeric(Value lhs, Value rhs)
 {
     VERIFY(!lhs.is_number() && !lhs.is_bigint());
@@ -1165,6 +1188,7 @@ bool same_value_non_numeric(Value lhs, Value rhs)
     }
 }
 
+// 7.2.15 IsStrictlyEqual ( x, y ), https://tc39.es/ecma262/#sec-isstrictlyequal
 bool strict_eq(Value lhs, Value rhs)
 {
     if (!same_type_for_equality(lhs, rhs))
@@ -1184,6 +1208,7 @@ bool strict_eq(Value lhs, Value rhs)
     return same_value_non_numeric(lhs, rhs);
 }
 
+// 7.2.14 IsLooselyEqual ( x, y ), https://tc39.es/ecma262/#sec-islooselyequal
 bool abstract_eq(GlobalObject& global_object, Value lhs, Value rhs)
 {
     if (same_type_for_equality(lhs, rhs))
@@ -1242,6 +1267,7 @@ bool abstract_eq(GlobalObject& global_object, Value lhs, Value rhs)
     return false;
 }
 
+// 7.2.13 IsLessThan ( x, y, LeftFirst ), https://tc39.es/ecma262/#sec-islessthan
 TriState abstract_relation(GlobalObject& global_object, bool left_first, Value lhs, Value rhs)
 {
     Value x_primitive;
@@ -1357,7 +1383,7 @@ TriState abstract_relation(GlobalObject& global_object, bool left_first, Value l
         return TriState::False;
 }
 
-// 7.3.10 GetMethod, https://tc39.es/ecma262/#sec-getmethod
+// 7.3.10 GetMethod ( V, P ), https://tc39.es/ecma262/#sec-getmethod
 Function* get_method(GlobalObject& global_object, Value value, const PropertyName& property_name)
 {
     auto& vm = global_object.vm();
@@ -1376,7 +1402,7 @@ Function* get_method(GlobalObject& global_object, Value value, const PropertyNam
     return &property_value.as_function();
 }
 
-// 7.3.18 LengthOfArrayLike, https://tc39.es/ecma262/#sec-lengthofarraylike
+// 7.3.18 LengthOfArrayLike ( obj ), https://tc39.es/ecma262/#sec-lengthofarraylike
 size_t length_of_array_like(GlobalObject& global_object, const Object& object)
 {
     auto& vm = global_object.vm();
@@ -1386,7 +1412,7 @@ size_t length_of_array_like(GlobalObject& global_object, const Object& object)
     return result.to_length(global_object);
 }
 
-// 7.3.22 SpeciesConstructor, https://tc39.es/ecma262/#sec-speciesconstructor
+// 7.3.22 SpeciesConstructor ( O, defaultConstructor ), https://tc39.es/ecma262/#sec-speciesconstructor
 Function* species_constructor(GlobalObject& global_object, const Object& object, Function& default_constructor)
 {
     auto& vm = global_object.vm();
@@ -1408,7 +1434,7 @@ Function* species_constructor(GlobalObject& global_object, const Object& object,
     return nullptr;
 }
 
-// 7.2.1 RequireObjectCoercible, https://tc39.es/ecma262/#sec-requireobjectcoercible
+// 7.2.1 RequireObjectCoercible ( argument ), https://tc39.es/ecma262/#sec-requireobjectcoercible
 Value require_object_coercible(GlobalObject& global_object, Value value)
 {
     auto& vm = global_object.vm();
@@ -1419,7 +1445,7 @@ Value require_object_coercible(GlobalObject& global_object, Value value)
     return value;
 }
 
-// 7.3.19 CreateListFromArrayLike, https://tc39.es/ecma262/#sec-createlistfromarraylike
+// 7.3.19 CreateListFromArrayLike ( obj [ , elementTypes ] ), https://tc39.es/ecma262/#sec-createlistfromarraylike
 MarkedValueList create_list_from_array_like(GlobalObject& global_object, Value value, AK::Function<Result<void, ErrorType>(Value)> check_value)
 {
     auto& vm = global_object.vm();
diff --git a/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp b/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp
index 6b63c47115..41ea268ca8 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakMapPrototype.cpp
@@ -25,6 +25,7 @@ void WeakMapPrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.has, has, 1, attr);
     define_native_function(vm.names.set, set, 2, attr);
 
+    // 24.3.3.6 WeakMap.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-weakmap.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), vm.names.WeakMap), Attribute::Configurable);
 }
 
@@ -44,6 +45,7 @@ WeakMap* WeakMapPrototype::typed_this(VM& vm, GlobalObject& global_object)
     return static_cast<WeakMap*>(this_object);
 }
 
+// 24.3.3.2 WeakMap.prototype.delete ( key ), https://tc39.es/ecma262/#sec-weakmap.prototype.delete
 JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::delete_)
 {
     auto* weak_map = typed_this(vm, global_object);
@@ -55,6 +57,7 @@ JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::delete_)
     return Value(weak_map->values().remove(&value.as_object()));
 }
 
+// 24.3.3.3 WeakMap.prototype.get ( key ), https://tc39.es/ecma262/#sec-weakmap.prototype.get
 JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::get)
 {
     auto* weak_map = typed_this(vm, global_object);
@@ -70,6 +73,7 @@ JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::get)
     return result->value;
 }
 
+// 24.3.3.4 WeakMap.prototype.has ( key ), https://tc39.es/ecma262/#sec-weakmap.prototype.has
 JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::has)
 {
     auto* weak_map = typed_this(vm, global_object);
@@ -82,6 +86,7 @@ JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::has)
     return Value(values.find(&value.as_object()) != values.end());
 }
 
+// 24.3.3.5 WeakMap.prototype.set ( key, value ), https://tc39.es/ecma262/#sec-weakmap.prototype.set
 JS_DEFINE_NATIVE_FUNCTION(WeakMapPrototype::set)
 {
     auto* weak_map = typed_this(vm, global_object);
diff --git a/Userland/Libraries/LibJS/Runtime/WeakRefConstructor.cpp b/Userland/Libraries/LibJS/Runtime/WeakRefConstructor.cpp
index 6940580ecc..7cab7cfd10 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakRefConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakRefConstructor.cpp
@@ -20,7 +20,10 @@ void WeakRefConstructor::initialize(GlobalObject& global_object)
 {
     auto& vm = this->vm();
     NativeFunction::initialize(global_object);
+
+    // 26.1.2.1 WeakRef.prototype, https://tc39.es/ecma262/#sec-weak-ref.prototype
     define_property(vm.names.prototype, global_object.weak_ref_prototype(), 0);
+
     define_property(vm.names.length, Value(1), Attribute::Configurable);
 }
 
@@ -28,6 +31,7 @@ WeakRefConstructor::~WeakRefConstructor()
 {
 }
 
+// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
 Value WeakRefConstructor::call()
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
index 46bcde5f95..412f9a82e3 100644
--- a/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WeakSetPrototype.cpp
@@ -24,6 +24,7 @@ void WeakSetPrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.delete_, delete_, 1, attr);
     define_native_function(vm.names.has, has, 1, attr);
 
+    // 24.4.3.5 WeakSet.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-weakset.prototype-@@tostringtag
     define_property(vm.well_known_symbol_to_string_tag(), js_string(global_object.heap(), vm.names.WeakSet), Attribute::Configurable);
 }
 
@@ -43,6 +44,7 @@ WeakSet* WeakSetPrototype::typed_this(VM& vm, GlobalObject& global_object)
     return static_cast<WeakSet*>(this_object);
 }
 
+// 24.4.3.1 WeakSet.prototype.add ( value ), https://tc39.es/ecma262/#sec-weakset.prototype.add
 JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::add)
 {
     auto* weak_set = typed_this(vm, global_object);
@@ -57,6 +59,7 @@ JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::add)
     return weak_set;
 }
 
+// 24.4.3.3 WeakSet.prototype.delete ( value ), https://tc39.es/ecma262/#sec-weakset.prototype.delete
 JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::delete_)
 {
     auto* weak_set = typed_this(vm, global_object);
@@ -68,6 +71,7 @@ JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::delete_)
     return Value(weak_set->values().remove(&value.as_object()));
 }
 
+// 24.4.3.4 WeakSet.prototype.has ( value ), https://tc39.es/ecma262/#sec-weakset.prototype.has
 JS_DEFINE_NATIVE_FUNCTION(WeakSetPrototype::has)
 {
     auto* weak_set = typed_this(vm, global_object);
diff --git a/Userland/Libraries/LibJS/Token.cpp b/Userland/Libraries/LibJS/Token.cpp
index 3d928bbb1e..f500023ab6 100644
--- a/Userland/Libraries/LibJS/Token.cpp
+++ b/Userland/Libraries/LibJS/Token.cpp
@@ -203,7 +203,7 @@ bool Token::is_identifier_name() const
 {
     // IdentifierNames are Identifiers + ReservedWords
     // The standard defines this reversed: Identifiers are IdentifierNames except reserved words
-    // https://www.ecma-international.org/ecma-262/5.1/#sec-7.6
+    // https://tc39.es/ecma262/#prod-Identifier
     return m_type == TokenType::Identifier
         || m_type == TokenType::Await
         || m_type == TokenType::BoolLiteral