PRS-T1 Modified Reader: jump to bookmarks/annotations by pressing < or >?

[martz]

Hi! To save battery, I un-rooted my PRS-T1, so I'm back using the original Reader app as well. I'll probably also add some of the modifications by morkl. But a feature I really miss is an instant, menu-less way to jump to bookmarks and/or annotations.

E.g. double-pressing ">" would take me to next bookmark (from current page) and double-pressing "<" would take me to previous bookmark.

Is it possible to add this feature to the original Reader app? (The "jump to annotation" command is in the menu -- but can you actually add custom button shortcuts to menu commands?)

Many thanks!