TkMan and RosettaMan ( rman ). Thomas Phelps. Download from ftp://ftp.cs.berkeley.edu/pub/people/phelps/tcl
"Two Years with TkMan: Lessons and Innovations. Or, Everything I Needed to Know about Tcl/TK I learned from TKMan." Thomas Phelps.
Interesting case study of Tcl/Tk usage. See address above.