simply put a cool down on skills. for those who are having a difficult time figuring out what this means.
simply put a time on a skill after its being used, for example if I use a "Fire ball" skill and I config it to have 6 seconds cool down,
you will not be able to use "Fire ball" until these 6 seconds are over. but while these 6 seconds, you are able to use others skills that are skill active. by that i mean that if there is 3 skills in my hot keys, i use the first one, 10 sec cool down, while the first skills is cooling down, i use the second skill and now it will have 10 sec cool down, and the first skill would have less since i used it first. and while the first skill is on its 6 secs and the second is on its 10 sec, im still able to use the third skill. Hope I explained it perfectly xD.