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+The OpenLayers build tool supports several different
+forms of compressing your javascript code, and a method
+of describing build profiles to create customized 
+OpenLayers builds with only the components you need.
+
+When building a file, you can choose to build with several
+different compression options to the Python-based build.py
+script. The following is an example script:
+
+python build.py -c closure full OpenLayers-closure.js
+
+This script selects the 'closure' compression mechanism,
+uses a config file called 'full.cfg', and writes the output
+to OpenLayers-closure.js.
+
+The options available for compression are:
+
+ * closure
+   This requires you to have a closure-compiler.jar in your
+   tools directory. You can do this by fetching the compiler
+   from:
+
+     http://closure-compiler.googlecode.com/files/compiler-latest.zip
+
+   Then unzipping that file, and placing compiler.jar into tools
+   and renaming it closure-compiler.jar.
+
+ * closure_ws
+   This uses the closure compiler webservice. This will only work
+   for files source Javascript files which are under 1MB. (Note that
+   the default OpenLayers full build is not under 1MB.)
+
+ * jsmin
+   jsmin is the default compiler, and uses the Python-based
+   jsmin script to compress the Javascript. 
+
+ * minimize
+   This is a simple whitespace removing Python script, designed
+   to fill in when other tools are unavailable.
+
+ * none
+   None will leave the Javascript uncompressed.
+
+
+For more information on the build script and custom build profiles,
+see http://docs.openlayers.org/library/deploying.html