Add reference to POSIX.

[pspp] / doc / headers / trace.texi

diff --git a/doc/headers/trace.texi b/doc/headers/trace.texi
index 7c3ae3a4cd98b639dfd73888c2a623ca6c863f49..4afedb31f2ce4713b12f70c069c9304feadd431d 100644 (file)
--- a/doc/headers/trace.texi
+++ b/doc/headers/trace.texi
@@ -1,6 +1,8 @@
 @node trace.h
 @section @file{trace.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/trace.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: