MSC: void far _getimage( short x1, short y1, short x2, short y2,

				 char huge *image )

	MSC: void far _getimage_w( double wx1, double wy1, double wx2,
				   double wy2, char huge *image )

	MSC: void far _getimage_wxy( struct _wxycoord far *pwxy1,
				struct _wxycoord far *pwxy2,char huge *image)

	- prototype in graph.h

	- (x1, y1) upper left coordinates of rectangle
	- (x2, y2) lower right coordinates of rectangle
	- image = buffer to receive screen image

	- Turbo C uses getimage()