Greetings,
having a big assembly, I've noticed that I've started using the timeline more often. Now it is only usable with the mouse, by clicking the arrows (play, forward etc) and dragging the time bar.
The idea here is to be able to move the time bar by using the keyboard, for example:
ctrl+ arrows (left or right) - to move the time bar
arrows (L/R) only - to move the highlighted blue square on the icons in the timeline. at the same time, the highlight is in the workspace highlighting the features/bodies etc.
Any other combination of shift and alt keys with the arrow keys could be useful in the timeline too.
Dean