Yun, <snip> Hi, it seems that the doc engine stops rendering digraph anymore.. Here is one example: http://docs.openstack.org/developer/nova/devref/vmstates.html It used to have a graph rendered based on graphviz I believe. Does anyone know what happened? Is it possible to get it back? Thanks, Yun </snip> Its rendering well for me, am using chrome. Kindly check your browser cache & see if it works. Cheers!! Atul http://www.csscorp.com/common/email-disclaimer.php