Add reference to POSIX.

[pspp] / doc / headers / fmtmsg.texi

diff --git a/doc/headers/fmtmsg.texi b/doc/headers/fmtmsg.texi
index f352df274cc616c9a360a2e67fe84cad944b2447..c09c1141f8f492f9cdb71c131ce9bbe9ef946e5b 100644 (file)
--- a/doc/headers/fmtmsg.texi
+++ b/doc/headers/fmtmsg.texi
@@ -1,6 +1,8 @@
 @node fmtmsg.h
 @section @file{fmtmsg.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/fmtmsg.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: