@node y1
@section @code{y1}
@findex y1

POSIX specification: @url{http://www.opengroup.org/susv3xsh/y1.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize