+ =====================================================================	+
|									|
| LIBRARY	: refute						|
|									|
| DESCRIPTION   : Support for refutation procedures.			|
|									|
| AUTHOR	: J.R.Harrison						|
| DATE		: 1996							|
|									|
| PORTED BY	: D.R.Syme						|
| DATE		: 1996							|
|									|
| MODIFIED      : R.J.Boulton						|
| DATE		: 6 August 1996						|
+ =====================================================================	+

Includes:
   Support for associative-commutative reasoning.
   Canonical forms for propositional and first order logic expressions.
   Wrappers for refutation procedures.