I'm playing with a keyboard and I'm not comfortable with the default controls. How do I change the controls on the menu? I can't assign any new keys for any actions, no matter how many keys I press, it just doesn't register somehow. I've noticed that when I hit F I cancel the change and go back, but that's about it. Is there a key that confirms assigning a specific key to a specific action?
EDIT: Since there isn't a manual or any instructions on the description, I have to ask here in the comments.