Add reference to POSIX.

[pspp] / doc / headers / sys_shm.texi

diff --git a/doc/headers/sys_shm.texi b/doc/headers/sys_shm.texi
index f268323e37b081035e5abcb41060983dddd420b1..39477cd984ff29b1b288cb5be98ec8bd7a310f61 100644 (file)
--- a/doc/headers/sys_shm.texi
+++ b/doc/headers/sys_shm.texi
@@ -1,6 +1,8 @@
 @node sys/shm.h
 @section @file{sys/shm.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/sys/shm.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: