How do I copy a part of a Surface

Hi!
I need to copy a part of a surface to a new surface. The purpose is to store several images(tiles) in one so that i only need one graphics file.
It was possible in the old version of PocketFrog, that I used until now, but how do I do it in version 0.5.2 (or when ever it was changed). In the old version i used the feature to Blit a Rect from one surface to another.
Regards Johan Bellander
I need to copy a part of a surface to a new surface. The purpose is to store several images(tiles) in one so that i only need one graphics file.
It was possible in the old version of PocketFrog, that I used until now, but how do I do it in version 0.5.2 (or when ever it was changed). In the old version i used the feature to Blit a Rect from one surface to another.
Regards Johan Bellander