Readonlyheight: ShapeSizeHeight in pixels, "fitText" for as tall as the shape's text, wrapped at the shape's width, or a percentage for a floating shape
Readonlywidth: ShapeSizeWidth in pixels, "fitText" for as wide as the longest line of the shape's text, or a percentage of the space
between the margins for a floating shape, such as "100%"
A shape's size in pixels, with optional rotation (degrees) and flip. Inside a group,
offsetpositions the shape.