Clears CLIPS. Removes all constructs and all associated data structures (such as facts and instances) from the CLIPS environment. A clear may be performed safely at any time, however, certain constructs will not allow themselves to be deleted while they are in use. For example, while deffacts are being reset (by the reset command), it is not possible to remove them using the clear command. Note that the clear command does not effect many environment characteristics (such as the current conflict resolution strategy). This function has no return value.
Syntax
(clear)