Broadbill- Try this link:
If you scroll down towards the bottom, there's a diagram of the knot and how to tie it. Unfortunately, it can't be blown up and my eyes aren't what they used to be, but I think that I can get the gist of it.
Flyfishingmagazines.com has lots of bonus material like this for American Angler, Fly Tyer, and Saltwater Flyfishing magazines. Hope it helps.