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
handle_free, pdefs.key.list

end