goto -90, 23; pendown; goto x-5, y; goto x, y-5; penup
goto -90, -23; pendown; goto x-5, y; goto x, y+5; penup
goto 91, 23; pendown; goto x+5, y; goto x, y-5; penup
goto 91, -23; pendown; goto x+5, y; goto x, y+5; penup