Not sure where to start with DR
 

Someone's requesting DR tracking for my UI, and I would love to add it, but I unfortunately have no clue as to how to go about adding diminishing returns...

Got any suggestions? Currently digging through gladius but I've limited experience in sorting out "this is an in game config option" and "this is actual code I'm looking for"

There's this... http://www.curse.com/addons/wow/diminishingreturns