Merge branch 'master' into ff/rrdd

[rrdtool.git] / doc / rrdgraph.pod

diff --git a/doc/rrdgraph.pod b/doc/rrdgraph.pod
index c8fe0e0..a96ecff 100644 (file)
--- a/doc/rrdgraph.pod
+++ b/doc/rrdgraph.pod
@@ -262,8 +262,10 @@ Note that for linear graphs, SI notation is used by default.
 
 [B<-z>|B<--lazy>]
 
-Only generate the graph if the current graph is out of date or not
-existent.
+Only generate the graph if the current graph is out of date or not existent.
+Note, that only the image size will be returned, if you run with lazy even
+when using graphv and even when using PRINT.
+
 
 [B<--daemon> I<address>]
 
@@ -478,6 +480,21 @@ There is more information returned than in the standard interface.
 Especially the 'graph_*' keys are new. They help applications that want to
 know what is where on the graph.
 
+=head1 ENVIRONMENT VARIABLES
+
+The following environment variables may be used to change the behavior of
+C<rrdtoolE<nbsp>graph>:
+
+=over 4
+
+=item B<RRDCACHED_ADDRESS>
+
+If this environment variable is set it will have the same effect as specifying
+the C<--daemon> option on the command line. If both are present, the command
+line argument takes precedence.
+
+=back
+
 =head1 SEE ALSO
 
 L<rrdgraph> gives an overview of how B<rrdtool graph> works.