atk.Rectangle — an object holding data about a rectangle
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A atk.Rectangle
    holds the position and size of a rectangle. The position is specified by
    the "x" and "y" attributes and the size, by the "width" and "height"
    attributes.
    atk.Rectangle(x=0, y=0, width=0, height=0)| Returns : | a new atk.Rectangle | 
Creates a new atk.Rectangle
      with the attributes specified by x,
      y, width and
      height. Any unspecified attributes default to
      0.