-@deftypefun void fmt_set_decimal (char @var{decimal})
-Changes the decimal point character for the basic numeric formats to
-@var{decimal}, which must be @samp{.} or @samp{,}. The F, E, COMMA,
-DOLLAR, and PCT will use the specified decimal point character, and the
-opposite character for grouping where appropriate. The DOT format
-uses the reverse choices.
-@end deftypefun