Role: This API deletes all operations defined using api_pm_start_state
and api_pm_note_state for the given history stream. Use this API when clearing a
part in preparation for loading or creating a new part. All api_pm functions
should be thought of as requiring the use of the PART_CONTEXT class.
Effect: System routine
Parameters:
hs
history stream to delete.
This object is included in the file: pm_api.hxx
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