The gameplay in SDLPoP is exactly the same as the original game. With the cursor, you can move your character from one side of the screen to the other and also jump, while with the 'shift' key, you can walk slowly and lunge when you have your sword drawn.
If you're curious, SDLPoP is based on the unmounted DOS version of Prince of Persia. This is because, if you've played Prince of Persia on Snes or Mac, you might remember that the graphics weren't that great. On each platform, the graphics look slightly different.
SDLPoP is a great way to enjoy one of the best video games of all time in a convenient way. All you have to do is unzip it, double click, and start playing.