(Shapes => 
  [ 
    { Type => 'Circle', Diameter => 2, Center => [0,1] }, 
    { Type => 'Square', Side => 3, Pos => [4,8] },
    [ {x => 1, y => 1}, {x => 3, y => 1}, {x => 4, y => 2}, {x => 2, y => 2} ]
  ]
);