This command is half the reason I'm writing this post. This is the single most useful change you can make to make your Dota experience more enjoyable. What this does is allow you to right click on friendly creeps when they are below 50% health to deny them. Normally, to do this, you have to press the 'A' key first and then click on the creep. Now I won't get into why denying is useful in this post, and as a new player you shouldn't worry about it, but I will say this makes it much, much easie