Issue 311: documentation error.
Issue 311: documentation error.

niklaskorz/pyglet,seeminglee/pyglet64,niklaskorz/pyglet,seeminglee/pyglet64,adamlwgriffiths/Pyglet,seeminglee/pyglet64,niklaskorz/pyglet,niklaskorz/pyglet,adamlwgriffiths/Pyglet,adamlwgriffiths/Pyglet,adamlwgriffiths/Pyglet