--- /dev/null
+@node ttyname
+@section @code{ttyname}
+@findex ttyname
+
+POSIX specification: @url{http://www.opengroup.org/susv3xsh/ttyname.html}
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on some platforms:
+mingw.
+@end itemize