The arrow keys may be used for moving around. The left arrow is the same as C-B, the right arrow is the same as C-F, the up arrow is the same as C-P, and the down arrow is the same as C-N.
The four function keys are command keys. The PF1 key is the same as M-X (the PF1 key is where the Gold key normally resides on DEC products, so it is a good choice for the key that asks for extended commands). The PF2 key is the same as C-Q (quote character). The PF3 key is the same as C-S (search forward). The PF4 key is the same as C-R (search reverse). These assignments have not been proven optimal, so they may get changed in the future.