I have v1.4.0.5.6 on Switch and I don't know what this is. I looked at PC terraria settings, and this option is not there. (this is an "option" on my settings page) I have a touch screen so I tried to see if i could touch it to go to it but it doesnt work (i tried to see if i can go on it normally). at first i thought that this was something about a key board and mouse, so i plugged mine into my dock and the option didn't let me access it. i just wanna know what it is.