added note on %S

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1435 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/doc/rrdgraph_graph.pod b/doc/rrdgraph_graph.pod
index 7f2a36b..19a732b 100644 (file)
--- a/doc/rrdgraph_graph.pod
+++ b/doc/rrdgraph_graph.pod
@@ -142,10 +142,14 @@ strings for the current locale.  Noon is treated as `pm' and midnight as
 `am'.  Note that in many locales and `pm' notation is unsupported and in
 such cases %p will return an empty string.
 
-=item B<%S>
+=item B<%s>
 
 The second as a decimal number (range 00 to 61).
 
+=item B<%S>
+
+The seconds since the epoch (1.1.1970) (libc dependant non standard!)
+
 =item B<%U>
 
 The  week  number  of  the current year as a decimal number, range 00 to 53, starting with the