TWO NOTES: (1) The file EDIT.EXE here is the PrEd editor from the University of Georgia. It is very similar to the Turbo Pascal built-in editor and has full on-line help. If you do not want to use PrEd, simply rename or delete it, then rename EDIT.BA! to EDIT.BAT, look at it, and follow the instructions there. (2) For fully Edinburgh-compatible syntax, put the line :- state(token_class,_,dec10). at the beginning of your program. When this is done, - A comment can be marked with % as well as /* */; - A string such as "abc" is a list of ASCII codes (as in Edinburgh Prolog) rather than a Prolog-2 string. Note! The built-in Prolog-2 predicates that require a string argument, such as chdir, will become hard to use. -- Michael Covington, Artificial Intelligence Programs, The University of Georgia, Athens, GA 30602 USA