/********************************************************************
/********************************************************************
/ CONSTAND DEFINITIONS

/*************************************************
/ DISPLAY (HIGH LEVEL) RELATED STUFF
	DCLEAR=1	/ CLEAR DISPLAY BEFORE NEXT DRAWING OPERATION
	DFULL=1		/ DRAW COMPLETE DISPLAY (NON-BLANK LOCS)
	DUPDAT=2	/ UPDATE PLAYING FIELD
	DSTATE=4	/ UPDATE STATUS DISPLAY
	DIALOG=10	/ REDRAW LAST TWO SCREEN LINES ON UPDATE