Ok, back from two weeks in spain I can now revise this.
Shift and control were used as the rotation keys because I needed two easy functions close to each other. I used two keys, because you can rotate in two directions. If you only had one rotation key, which direction would you want it to rotate in? I'm going to use clockwise.
Oops, I was writing the game with someone in mind, who said the return key didn't work in winxp, so I put in support for the spacebar. And forgot to add return key support.
Raven, stickykeys is activated if you press shift or control rapidly 5 times, so there you have it.
Exit is on the main menu, but you can't exit from the game screen. It doesn't take too long to pile up all the pieces to the top to end the game though. I'll add the escape button.
Once I was but the learner,
now, I am the Master.