ScreenCopy for SDL

[SSC]

I would like to know how I can multiple screens in SDL...

An example of what I mean would be If I had a main video surface, and I had a text surface, I want to be able to draw the main video surface to the screen and then the text surface in a loop so that if a change is made to the text it is overwritten by whatever is drawn on the main surface and the new text gets refreshed on the screen.

 I need to do this without overwriting the main surface. similar to multiple screens using: screen(pages)/screencopy/pcopy in GFX lib.