hud_autoaim_method

I was looking through the console commands, and I found 2-3 commands about some sort of hud_autoaim. Is this a hack I unknowingly downloaded, or is it the “The computer helps you aim” feature HL2 has on Easy difficulty? Speaking of which, it seems Garrysmod uses easy HL2 difficulty. Is there any way to change this?

It’s from the “computer helps you aim” thing. It isn’t implemented in GMod, but I’m not sure.