I draw UML diagrams frequently. I almost never persist them, though. As they say, the only thing worse than no documentation is out of date documentation. I

I draw UML diagrams frequently. I almost never persist them, though. As they say, the only thing worse than no documentation is out of date documentation. I can definitely see an argument for certain types of projects (libraries and frameworks). If you have diagramming capability, and you are in the enterprise Windows market, I think this is a no-brainer. I'd be curious what diagramming support you had if it were not UML.... Having said that, I wouldn't try to implement a full object modelling solution. It's not the kind of thing that help files need. Actor diagrams and sequence diagrams would make more sense to me.