This is an independent implementation of Objective C - independent of Stepstone's, NeXT's, GNU's (Free Software Foundation) or SunSoft's Objective C implementation. Like the GNU compiler, the "objc" grammar is written in YACC. The lexical ananlyzer is written in LEX, and the compiler itself in the Bourne shell and in Objective C. (the optional Objective C link editor is written in AWK). WWW: http://users.pandora.be/stes/compiler.html