  PROC printerdump
  PROC fill(r0,r1)
  PROC circle(r0,r1,r2)
  PROC draw(r0,r1)
  PROC drawto(r0,r1)
  PROC move(r0,r1)
  PROC moveto(r0,r1)
  FUNC readpixel(r0,r1)
  FUNC getcolor(r0,r1)
  PROC plot(r0,r1)
  PROC plottext(s0$)
  PROC plottext(i0#,i1#,s0$)
  PROC backcolor(i0#)
  PROC pencolor(i0#)
  PROC window(r0,r1,r2,r3)
  PROC clear
  PROC viewport(i0#,i1#,i2#,i3#)
  FUNC depth
  FUNC height
  FUNC width
  PROC textscreen
  PROC graphicscreen(i0#)
  FUNC xcor
  FUNC ycor
