ABC: a: the rudiments of reading, writing, and spelling
b: the rudiments of a subject
(http://c.gp.cs.cmu.edu:5103/prog/webster?abc)
Home Pages:
http://www.cwi.nl/~steven/abc/
http://www.cwi.nl/~guido/ftp/steven/www/abc.html
MacABC
MAC NAME: MacABC
VERSION: 1.04.01
README:
"ABC is an imperative language originally designed as a replacement for BASIC: interactive, very easy to learn, but structured, high-level, and easy to use. ABC has been designed iteratively, and the present version is the 4th iteration. The previous versions were called B (not to be confused with the predecessor of C)".