Quelling strikes -> how does it exactly work?

[Enfarious]

As a BLM I'll usually open up with Quelling + Raging Strikes so that I can start heavy on a target and then my enmity is in check for the rest of the fight usually. I've seen many Bards be guilty of just opening up hard on a boss without using Quelling and they wonder why things go running after them.

I think this is the best way to open for any job that can bring Quelling, it allows the tank to build it's total enmity while the DD can still go all out. Most fights are much smoother this way, just too bad every DD can't Quelling Strike