> I'll have to read the paper describing C3: >> http://www.webcom.com/haahr/dylan/linearization-oopsla96.html >>but I expect I'll have to agree. Thanks for your help! You're welcome, btw, I just discovered (reading the source and then the documentation, oh well, the last time I checked out of curisioty I could not find this info and did not think to look at the source) that Goo http://www.ai.mit.edu/~jrb/goo/index.htm by Jonathan Bachrach et al. at MIT is using C3 too http://www.ai.mit.edu/~jrb/goo/manual.43/goomanual_55.html