Add reference to POSIX.

[pspp] / doc / headers / ftw.texi

diff --git a/doc/headers/ftw.texi b/doc/headers/ftw.texi
index bbf70096e4fcedd5a5e9b7b4daa7e7f2b18895a9..3ce3160ea48d11bcecbf54b23437b4ff3b642b7d 100644 (file)
--- a/doc/headers/ftw.texi
+++ b/doc/headers/ftw.texi
@@ -1,6 +1,8 @@
 @node ftw.h
 @section @file{ftw.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/ftw.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: