@node y0
@subsection @code{y0}
@findex y0

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/y0.html}

Gnulib module: y0
@mindex y0

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8.
@end itemize
