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+@node pipe
+@section @code{pipe}
+@findex pipe
+
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/pipe.html}
+
+Gnulib module: pipe-posix
+
+Portability problems fixed by Gnulib:
+@itemize
+@item
+This function is missing on some platforms:
+mingw, MSVC 9.
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function crashes rather than failing with @code{EMFILE} if no
+resources are left on some platforms:
+Cygwin 1.7.9.
+@end itemize