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allow to restore xml files with zero row rras ... this is a degenerated case
[rrdtool.git]
/
doc
/
rrdgraph.pod
diff --git
a/doc/rrdgraph.pod
b/doc/rrdgraph.pod
index
ca3c128
..
be421e8
100644
(file)
--- a/
doc/rrdgraph.pod
+++ b/
doc/rrdgraph.pod
@@
-485,8
+485,9
@@
B<CDEF:>I<vname>B<=>I<RPN expression>
B<VDEF:>I<vname>B<=>I<RPN expression>
B<VDEF:>I<vname>B<=>I<RPN expression>
-You need at least one B<DEF> statement to generate anything. The
-other statements are useful but optional.
+You need at least one B<DEF> and one B<LINE>, B<AREA>, B<GPRINT>, B<PRINT>
+statement to generate anything useful.
+
See L<rrdgraph_data> and L<rrdgraph_rpn> for the exact format.
NOTE: B<Graph and print elements>
See L<rrdgraph_data> and L<rrdgraph_rpn> for the exact format.
NOTE: B<Graph and print elements>