What's the best way to include user data in a drawing? I'm looking for something that works basically like the VLAX-LDATA stuff in Lisp.
I tried using the UserData collection on the Document class, but it doesn't seem to be saved with the drawing. So I'm guessing it needs to be a database-resident entity.
I looked at the DBDictionary and DictionaryWithDefaultDictionary stuff, but I don't think they do what I want. Those seem to provide dictionaries of ObjectIds, whereas I want to write some string values to the drawing that I can read again the next time the drawing is opened.