How to use SaveBackground?

[z33z]

Anyone used SaveBackground/RestoreBackground and have an example of how to use them?

[Sphax]

This option is activated by default is only be effective for software rendering. It allows each object to save its background before a move and to restore it after a move. If you deactivate it, the object will not save its background and after a move, its image will be pasted on the frame.

You can disable this option to optimize your application if another object save the background of the object (so the object will not be pasted on the frame and MMF2 will not take time to save/restore the background of each object).

[z33z]

The thing is that I need to do it manually for the pathfinding object...