There are a bunch of integration options between Emacs and UML tools, like
plantuml embedding, a
plantuml major mode etc. Of course I can try them out but I'm wondering what other people use for a UML workflow?
Embedding inside another document like
org-mode does is a nice idea, or outputting the generated uml in another buffer live-updated would be nice too. I'm sure people out there have some super-cute elisp functions to automate this kind of thing!