Add reference to POSIX.

[pspp] / doc / headers / pwd.texi

diff --git a/doc/headers/pwd.texi b/doc/headers/pwd.texi
index 479c980d9205b8b91684cc6e211e563ebe4bccae..5fb1b629907d4980d032a6371ce34eb62c2bbea1 100644 (file)
--- a/doc/headers/pwd.texi
+++ b/doc/headers/pwd.texi
@@ -1,6 +1,8 @@
 @node pwd.h
 @section @file{pwd.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/pwd.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: