No mention of pressing 'F', and I tried it and nothing happened. I also don't know how to choose one of the two options, since ADSW doesn't move anything and neither does the mouse -- my only option is to hit 'Esc' and quit/restart the game.
(cant include screenshot, "Request To Large" from itch.io)
The "assist" options are a very good idea for a game still testing, I was able to "infinite jump" to get back to this point quickly for testing.