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

POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/y1.html}

Gnulib module: y1

Portability problems fixed by Gnulib:
@itemize
@end itemize

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