[syslinux] Arrow key feature request

[Alexander Perlis]

Since keystrokes were brought up, this seems like a reasonable time to 
make the following seemingly simple-to-implement feature request:

Navigating a multi-level menu structure seems to require use of 
UP/DOWN/ENTER/ESC. It would be easier to quickly search/navigate if it 
could be done with fingers stationed on the arrow keys so that the eyes 
can stay focused on the screen.

Current (disliked-by-me) behavior:
   LEFT ARROW: Jump to top menu entry (same as HOME and PAGE UP)
   RIGHT ARROW: Jump to bottom menu entry (same as END and PAGE DOWN)

Preferred (requested) behavior:
   LEFT ARROW: Return to previous menu (same as ESC on a submenu)
   RIGHT ARROW: Enter submenu (or no action if not on a submenu entry)

Thanks,
Alex