Diagramming tool used for vocab.png

What utility is used to generate the class diagram for the core Hydra spec?

Thanks!

/Paul
--------------------------------------------------- Confidentiality Notice: This electronic mail transmission is confidential, may be privileged and should be read or retained only by the intended recipient. If you have received this transmission in error, please immediately notify the sender and delete it from your system.

Received on Friday, 19 September 2014 15:28:47 UTC