Hi Michael,

> Maybe it would be a good compromise to keep track of the orientation of only breps and not curves...
> Or maybe I should just add it to everything anyway. I'm not quite sure.

Isn't that what beta testing is for ?

> Then there is another complication which is what if you have 2 objects like you show there,
> and you have oriented them in different directions and then you select both of them,
> what would you expect for the frame to show in that case?

I would just be expecting the frame to be orientated with the single selected object and to the object boundary extents for multiple selections.

.