@section @code{tolower}
@findex tolower
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/tolower.html}
+POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/tolower.html}
Gnulib module: ---
Portability problems not fixed by Gnulib:
@itemize
@item
-On Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
+On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize