Mirror entire page, in the same menu where I can now rotate an entire page by 90 or 180 degrees.

Use case: I want to make notes on a floor plan in an imported PDF file.
But the floor plan is a mirror image of the actual space. So I want to begin by creating a mirror image of the page. In this case, I want a mirror of the image on the PDF page. I can also see reasons to be able to “flip” either the entire page with annotations or just an image in the imported PDF file, or even just a lasso’ed portion of the page.

Thanks for considering