//--------------------------
// example 5
// shape geometry
 
color(darkgreen)

shape(3,0.1,0.1)
 point(-3,3)
 point(3,3)
 point(3,-3)
 point(-3,-3)
 point(-3,0)
 point(-1,0)
 point(-1,-1)
 point(1,-1)
 point(1,1)
 point(-1,1)
 point(-1,0)
 point(-3,0)
shape.end