keymap-arrow

Argument/Option	Description
[steps]	The number of steps the cursor moves up or down.

[steps] can be one of the following values:

Value	Description
n	Move the cursor n lines up or down, negative for up, positive for down.
n%	Move the cursor n% of the screen height up or down, negative for up, positive for down.
"top"	Move the cursor to the top (first item).
"bot"	Move the cursor to the bottom (last item).
"prev"	Go to the previous item, or the bottom if the cursor is at the top.
"next"	Go to the next item, or the top if the cursor is at the bottom.

The arrow prev/arrow next commands are similar to arrow -1/arrow 1, except that the former supports wraparound scrolling.