wow, no one answered this. Well after getting frustrated with this myself, I started clicking in every way possible, and it turns outs the solution is:
hold down the Shift Key while you click an option, it will toggle through selecting all and none.
ok, well, either I need to go see a psychiatrist, OR someone updated the app right quick; cause there's now a select all option, AND holding the shift key while clicking no longer works (unfortunately - key commands are a helpful addition to streamlining workflow, reminds me of when there was CLI (autocad14 I think) and you could "draw" things just by sitting there and typing. Great if you've already got everything in your head).