A Common Lisp version of an enhancement to the Boyer-Moore theorem-prover that provides interactive capabilities and first-order quantification is now available under the usual conditions: no license, no copyright, no fee, no support. The system runs well in at least three Common Lisps: AKCL, Symbolics, and Lucid. There are no operating system or dialect conditionals, so the code may well run in other implementations of Common Lisp. However, it is important that your Common Lisp supports redefinition of functions. For example, KCL (as opposed to AKCL) is not acceptable. Before bothering to get a copy, first get a copy of the Boyer-Moore theorem-prover. Then, to get a copy of the interactive enhancement, follow these instructions: To get a copy follow these instructions: 1. ftp to Internet host cli.com. (cli.com currently has Internet number 192.31.85.1) 2. log in as ftp, password guest 3. get the file /pub/proof-checker/README-pc 4. read the file README-pc and follow the directions it gives. Inquiries concerning tapes may be sent to: Computational Logic, Inc., Suite 290 1717 W. 6th St. Austin, Texas 78703 A carefully written user's manual is available. For information on obtaining a copy, write to me at the address above. Matt Kaufmann kaufmann@cli.com