The optional argument @var{locale}, a string, overrides the setting of
your current locale identifier for collation. The value is system
dependent; a @var{locale} @code{"en_US.UTF-8"} is applicable on POSIX
systems, while it would be, e.g., @code{"enu_USA.1252"} on MS-Windows
The optional argument @var{locale}, a string, overrides the setting of
your current locale identifier for collation. The value is system
dependent; a @var{locale} @code{"en_US.UTF-8"} is applicable on POSIX
systems, while it would be, e.g., @code{"enu_USA.1252"} on MS-Windows