The draw-rectangle s function draws several rectangles as specified in description which consists of a group of values given as x y width height . The filled keyword if non- nil causes filled rectangles to be drawn. While the exact results are host-specific, it is intended that a filled rectangle does not include the lines (x = x+width) and (y = y+height ) while a non-filled rectangle does. This function works correctly if the port 's transform includes rotation. The graphics state parameters transform, foreground, background, operation, thickness, scale-thickness, dashed, dash, line-joint-style , stipple, pattern , mask-x, mask-y, and mask are used.