<script>
function drawPicture(){
  initPicture("figure1")
  origin = [50,50]
  unitlength = 20
  axes()
  a = [0,0]
  b = [5,5]
  marker = "dot"
  line(a,b)
  text(a,"a","belowright")

  text(b,"g","above")
  text(b,"b","right")
  text(b,"b","left")
  text(b,"b","below")
  text(b,"b","aboveleft")
  text(b,"b","aboveright")
  text(b,"b","belowleft")
  text(b,"b","belowright")
  stroke = "red"
  path([a,[0,5],b,[5,0]])
  stroke = "green"
  marker = "none"
  curve([a,[1,0.5],[2,2],[4,2],[6,3]])
  stroke = "blue"
  circle([0,0],1)
  ellipse([0,5],1,2)
  stroke = "purple"
  rect([0,0],[2,2],.5,1)
  marker = "arrowdot"
  line(a,[5,0])
  initPicture("figure2")
  line(a,b)
  text(a,"a","below")
}
</script>