Object classes in powerpoint diagrams?

[dammfine]

HTML objects have a "class"; Word documents have a "style". The idea is to apply a consistent theme across a variety of objects that all share something in common according to the meaning of the diagram, and to be able to change that theme later if you want without clicking on all the (maybe dozens or hundreds) of little instances of that class.



So does Powerpoint (or Word) drawings/diagrams have something like an HTML "class" or a Word "style"? Despite my searching I have not found it, but it seems like such a must that I just don't believe that Powerpoint/Word would lack such a feature.

Thanks!
-Ben