This is helpful – but as far as I can tell – that only allows movement (using the keyboard) between the Top and Enclosing group?
Personally, I would find it incredibly useful were one able to toggle ‘focus’ between the sidebar, and the the ‘main’ window (i.e. what is not the sidebar, not the inspector, and not the document ‘preview’ window) using the keyboard.
Once that focus is ‘active’ on/in the sidebar, being able to use the up/down keys to move the selection, with “enter/return” or something similar to ‘select’ that group, and then ‘open/display’ its contents within the ‘main’ window, would be incredibly useful.
@cgrunenberg >> Criss, would something like this be at all possible?