pro Graff_clear, pdefs ;+ ; GRAFF_CLEAR ; Release memory from handles in a Graffer plot structure ; ; Usage: ; graff_clear,pdefs ; ; Argument: ; pdefs struct in/out The graffer control structure ; ; Note: ; The structure is not usable after clearing until ; re-initialised ; ; History: ; Extracted from GRAFF_EVENT: 18/8/95; SJT ;- handle_free, pdefs.data handle_free, pdefs.text end