I think it's to do with the position of the annotations relative to the fixture. The default is vertically below the fixture. I think they're asking for buily in options to change the default position, maybe on a per-fixture basis, or maybe on a per-plot basis, to be able to set a default of North/East/South/West direction from the fixture.
Personally I think being able to set it in the fixture makes most sense, as there is already a section for plot annotation settings there. And it's probably something that would be consistent for fixtures over multiple plots.