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6.5.1 Creating and Maintaining Inferencing States

Inferencing states are first-class objects that can be created and destroyed as required. Each inferencing state must have a unique name (as compared with eql ) and initially there is a single inferencing state named :default .

The function make-inferencing-state makes a new empty inferencing state. Inferencing states must be destroyed with destroy-inferencing-state when no longer needed, to release the memory that they use.

Inferencing states can be found using the function find-inferencing-state and the function list-all-inferencing-states can be used to make a list of all known inferencing states.

KnowledgeWorks and Prolog User Guide (Windows version) - 6 Dec 2011