Possible to make it so I can just aim with mouse?

Yeah I know all that.
But I want to make it so I can look up and down with mouse without pushing Home or End.

If you read the thread, it tells you how to do so. :)

I already know, except for the fact it doesn't work

if you dont apply changes in cfg. just press "u" in game and rat-aiming will be turn on. in game options you can also invert axis.

Hey ,was wondering.howd you find this detail out? theres no where online it says to press "u" to free aim (rat aim) I'm curious because im currently making a profile on xpadder to map controlls to feel modern on xbox controller and was curious if there's any more hidden useful keys like this.please lmk I'm very curious!

I have been playing RR off and on since original release and versions to play on modern windows versions. I tried to pick it up again. i downloaded my old GOG version and have no success to get around all the bugs and missing functions. SOmething changed along the way. I started looking around and i found an archive.

This version runs out of the box with no hacking necessary.