Peter Michaux wrote:
How can I switch from the big text editing area back to the drawer without using the mouse so that I can choose a new file?
Try control-tab (and control-shift-tab to go back). But you might also like to use the command-t shortcut to select another file. If it *is* a *new* file you're after via the sidebar then control-tab twice will highlight that icon, but command-shift-n will be quicker.
Cheers, Paul