national conventions. GCC inspects the locale categories
@env{LC_CTYPE} and @env{LC_MESSAGES} if it has been configured to do
so. These locale categories can be set to any value supported by your
-installation. A typical value is @samp{en_UK} for English in the United
-Kingdom.
+installation. A typical value is @samp{en_GB.UTF-8} for English in the United
+Kingdom encoded in UTF-8.
The @env{LC_CTYPE} environment variable specifies character
classification. GCC uses it to determine the character boundaries in