Mon, August 2, 2004 (Link to the UML Specification v1.5)

Okay, it took me forever to find the OMG's formal UML Specification v1.5, so here's a direct link to the page it is on. I'm not sure why, but I started at (don't go to without the "www" prefix because that doesn't work), and they bounced me to, and they bounced me back to for the actual doc. Argh.