Thanks for your replies guys

Simarilius, I would agree with you if I only wanted to pan up & down (as for using the scrolling wheel), but what if you actually wanted to pan diagonally from the upper right corner of the document to the lower left? Without the Hand Tool you'd have to do 2 movements by scrolling down vertically first, then again horizontally from right to left. Whereas with the HT you'd just drag as needed while holding down space bar (its shortcut in Adobe applics).
But as for the other shortcuts you cited, what is "rt"? - "Right" something?
Thanks again guys,
JDL