Add reference to POSIX.

[pspp] / doc / headers / sys_msg.texi

diff --git a/doc/headers/sys_msg.texi b/doc/headers/sys_msg.texi
index 7161b5aee1acbec52dd2569bddafa7a983dd94cb..5d8a7b6e775b6fc8685f058d82c83f8beca93369 100644 (file)
--- a/doc/headers/sys_msg.texi
+++ b/doc/headers/sys_msg.texi
@@ -1,6 +1,8 @@
 @node sys/msg.h
 @section @file{sys/msg.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/sys/msg.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: