xlib-set-drawing-mask! -- Set the drawing mask used by the xlib-* primitives.
xlib-draw-rectangle! -- Draws a rectangle to the screen using the Xlib call XDrawRectangle.
xlib-draw-line! -- Draws a line using the Xlib call XDrawLine.
xlib-draw-arc! -- Draws a arc to the screen using the Xlib call XDrawArc.
xlib-set-line-attributes! -- Sets the line width of the DrawingGC to WIDTH and style to STYLE.
xlib-set-fill-style! -- Sets the fill style of the DrawingGC to STYLE.