Document support for separate preseeding of language, country and locale

1 files changed, 21 insertions, 4 deletions

diff --git a/en/boot-installer/parameters.xml b/en/boot-installer/parameters.xml
index 0d0a0a6d4..d1848b5ea 100644
--- a/en/boot-installer/parameters.xml
+++ b/en/boot-installer/parameters.xml
@@ -538,13 +538,30 @@ cases. General instructions how to do this can be found in
 <variablelist>
 
 <varlistentry>
+<term>debian-installer/language (language)</term>
+<term>debian-installer/country (country)</term>
 <term>debian-installer/locale (locale)</term>
 <listitem><para>
 
-Can be used to set both the language and country for the installation.
-This will only work if the locale is supported in Debian.
-For example, use <userinput>locale=de_CH</userinput> to select German as
-language and Switzerland as country.
+There are two ways to specify the language, country and locale to use for
+the installation and the installed system.
+
+</para><para>
+
+The first and easiest is to pass only the parameter <literal>locale</literal>.
+Language and country will then be derived from its value. You can for example
+use <userinput>locale=de_CH</userinput> to select German as language and
+Switzerland as country (<literal>de_CH.UTF-8</literal> will be set as default
+locale for the installed system). Limitation is that not all possible
+combinations of language, country and locale can be achieved this way.
+
+</para><para>
+
+The second, more flexible option is to specify <literal>language</literal>
+and <literal>country</literal> separately. In this case
+<literal>locale</literal> can optionally be added to specify a specific
+default locale for the installed system. Example:
+<userinput>language=en country=DE locale=en_GB.UTF-8</userinput>.
 
 </para></listitem>
 </varlistentry>