Thanks a bunch - Using Acrobats "Outline Page Geometry" is going to work perfect!

Oh snap - I didn't realize I was that far behind...

Nope - I need it for when the pdf passes on to other equipment to use, such the path to follow for digital routing, laser or digital knife cutting.  If it were me I would upgrade to 13 in a heartbeat, but we have a spending freeze here probably til first of the year. 

It sounds like I'm out of luck - I'm on Pitstop 12 still.
Add a Stroke to the Trim Box for Visualization & "Pick use Page Box - 'Trim' and/or 'Bleed' isn't in 12.
Drawing lines can be done, but I need as a rectangle/closed shape.
My existing action works "OK", but then I have to do manual steps of selecting/copy/pasting, then deleting the blank page. It would be nice just to get rid of those steps...

I know this is old, but I have an action that will add a rectangle on a blank page, then use "change objects that are close to the page edge" set at 100 inches and will enlarge the rectangle to the trim box size. See attached. Is there anyway I can do this without adding a blank page at the beginning of the action or move the rectangle with the action to another page? I'm on PitStop 12... See attached.