Rotate 30°: rotates the whole tiling 30° clockwise.
Rotate 36°: rotates the whole tiling 36° clockwise.
Rotate 45°: rotates the whole tiling 45° clockwise.
Just be warned that rotation takes place about the origin. When you start the program, the origin is in the centre of the screen but if you have shifted the tiles about using the 'hand' icon, the origin will no longer be in the centre of the screen and your tiling may shift sideways unexpectedly.