On BBM chat:
S and A= When you are in not text area you can scroll down keeping pressed the S letter and the A letter to scroll up. If you want to scroll like of the chat was by pages press the space bar.
E= when you are in not text area you can press the Eletter to go directly to the feeds of the contact that you are chatting.
P=when you are in not text area you are press the P to go to the top of the chat.
Posted via CB10