From 9b3f8a096b6202b9bd580586476660933c7f913f Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Fri, 27 May 2005 19:17:17 +0000
Subject: [PATCH] add note on variable names

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@599 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 doc/rrdgraph_data.pod | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/doc/rrdgraph_data.pod b/doc/rrdgraph_data.pod
index e8b2c67..c57b2c3 100644
--- a/doc/rrdgraph_data.pod
+++ b/doc/rrdgraph_data.pod
@@ -19,6 +19,9 @@ useful information such as maximum, minimum etcetera. Two of the
 instructions use a language called B<RPN> which is described in its
 own manual page.
 
+Variable names (I<vname>) must be made up strings of the following characters
+C<A-Z, a-z, 0-9, -,_> with a maximum length of 255 characters.
+
 =head1 DEF
 
 B<DEF:>I<E<lt>vnameE<gt>>=I<E<lt>rrdfileE<gt>>:I<E<lt>ds-nameE<gt>>:I<E<lt>CFE<gt>>[:step=I<E<lt>stepE<gt>>][:start=I<E<lt>timeE<gt>>][:end=I<E<lt>timeE<gt>>][:reduce=I<E<lt>B<CF>E<gt>>]
-- 
2.11.0