local shape,cr,show = ... --DOC_HIDE

shape.infobubble(cr, 70, 70)
show(cr) --DOC_HIDE
 
shape.transform(shape.infobubble) : translate(0, 20)
   : rotate_at(35,35,math.pi) (cr,70,20,10, 5, 35 - 5)
show(cr) --DOC_HIDE
 
shape.transform(shape.infobubble)
   : rotate_at(35,35,3*math.pi/2) (cr,70,70, nil, nil, 40)
show(cr) --DOC_HIDE