I give up! I give up! I give up!!!
Ok, I'm sure I'm doing this completely wrong, but I'm trying to self teach myself Family Creation and Editing. I'm taking the Fixed window family and editing it to create a more "generic" look.
I have most of it working. However, there is this "not a reference" reference plane at the bottom of the Exterior/Interior Elevation views that I can't delete. Neither can I delete the Dimension line to it
I've removed the Default Sill Height Label as we usually place windows based on a Head Height. I've added that as a label and flexed the style. Everything seems to work except I can't delete this friggin reference plane.
All help is welcome!