The size of the :class:`SoftwareSprite` as tuple.
+ .. method:: subsprite(area : (int, int, int, int)) -> SoftwareSprite
+ Creates another :class:`SoftwareSprite` from a part of the
+ :class:`SoftwareSprite`. The two sprites share pixel data, so if the
+ parent sprite's surface is not managed by the sprite (``free`` is False),
+ you will need to keep it alive while the subsprite exists.
.. class:: TextureSprite()