@section @code{optarg}
@findex optarg
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/optarg.html}
+POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/optarg.html}
Gnulib module: ---
@itemize
@item
This variable is missing on some platforms:
-MacOS X 10.3, IRIX 6.5, OSF/1 5.1, Cygwin.
+MacOS X 10.3, IRIX 6.5, OSF/1 5.1.
@end itemize