HMM3_Lighter

Perhaps we could give users the ability to assign their own, more "convenient" hotkeys (probably for trading; some might find the spacebar or any letter key, like M, more convenient.

It's clearer now, of course, but my humble opinion is that at this stage, one of the undeniable advantages of this program is its usability (ease of use). Never mind – let's stick with F10 for now (we'll manage; it's not a big deal).
But the brilliance of the instruction – 3 (or 5) lines – will remain. It's probably best not to give the user too many choices right now; sometimes it's detrimental. Let's keep everything crystal clear for now? Add the split function, and we're almost there!