check for round function as it is in -lm in solaris ...

[rrdtool.git] / doc / rrdgraph.pod

diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod
index e40b046..fbc217b 100644 (file)
--- a/doc/rrdgraph.pod
+++ b/doc/rrdgraph.pod
@@ -354,7 +354,7 @@ color.
 
 Pick the shape of the color marker next to the label according to the element drawn on the graph.
 
-[B<--zoom> I<factor>]
+[B<-m>|B<--zoom> I<factor>]
 
 Zoom the graphics by the given amount. The factor must be E<gt> 0