Keys for "next/previous page"

[Occisor]

It's a very strange decision to use only two keys — "N" and "P" — to switch pages.
How can I add other keys, such as the arrow keys (right/left), "PgDn/PgUp", or "Space/Backspace"?
Linux version.

[johnfactotum]

It's a very strange decision

N and P are the same ones Evince has. I'm not sure if Evince invented them or if they took it from somewhere else.

How can I add other keys, such as the arrow keys (right/left), "PgDn/PgUp", or "Space/Backspace"?

These already work. If not, it would be a bug.