Probably too late to be useful, but... At Wed, 06 Feb 2008 10:11:13 -0500, "Tom Sgouros" wrote: > What I'm trying to do is only port some code I wrote in 1999 with the > class system in use then. I didn't realize the class system had changed > so much. Is there a class-vintage-1999.ss somewhere? See "class100.ss" in MzLib. Matthew