Am 24.09.2017 um 11:33 schrieb brynn:
Before 0.92, it was very, very simple, and easy to understand and easy to use. Now, it is not.

I think one of the main sources of confusion is the wording and design of the document properties dialog, not the choice of units themselves:

While I'm no UI expert (who is ever? ;-) ) I think a possible solution to that would be: