The KnowledgeWorks object base (all the KnowledgeWorks CLOS objects and any optimized structures) may be cleared by choosing
Memory > Clear Objects
from the KnowledgeWorks Listener, or by calling the function reset.
KnowledgeWorks rules may be cleared by choosing
Memory > Clear Rules
from the KnowledgeWorks Listener, or by calling the function clear-rules. Clearing the rules does not remove the default context default-context but all the rules in it are removed.
KnowledgeWorks object base and rules may be cleared by choosing
Memory > Clear Objects and Rules
from the KnowledgeWorks Listener, or by calling the function clear-all. CLOS class definitions remain in effect.
KnowledgeWorks and Prolog User Guide (Unix version) - 24 Mar 2017