I have been looking for the documentation on Bumptop and I can't seem to find it. Usually these type of things are right in front of me and I overlook them some how. This causes me to take the difficult route in more cases than not.
So since I couldn't find the keyboard shortcuts, I tried to document what I found through experimentation here:
ctrl-. show selected files right-click menu
ctrl-a Select all
ctrl-g grow selected
ctrl-s shrink selected
ctrl-w Close Bumptop
ctrl-p enable/disable debug keys.
-- Debug keys are below --
ctrl-/ enable/disable box texture rendering
ctrl-, clear the desktop !!! bad
ctrl-m windowed/full screen
ctrl-n repositions on/off
ctrl-' filenames on/off
ctrl-l Infinite Bumptop Mode
ctrl-h name selected item
ctrl-\ Optimizations on/off
ctrl-] VSynch on/off
ctrl-[ changes Bumptop background to the grid-view background??
ctrl-5,6 switch between top-down and angled views
ctrl-8,9 Previous and Next photo Frame.
ctrl-0 start Tests.