That's really interesting Calibre! It's nothing like the image I've been building in my own imagination.

I can see this is going to be quite a prolonged project.

Thanks Remy. I didn't know it worked with imported images as well as symbols.

That will cut out a lot of fiddling around, since I looked back more carefully at my own parchment-added maps and realised that they were either seamless parchment fills from PF assets, or I had deliberately imported the parchment as a bitmap fill and drawn a rectangle of it over the map. That last option is the fiddly one, since you have to scale it right to move the non-seamless joins off the edge of the map in both directions.

Remy did a live mapping session that showed how to make a hole in the floor here:

https://youtu.be/5Mlde_o2KGU?t=2275

That's ok - youre welcome :)

I just hope I am thinking fast and well enough to keep up on this sleepy Sunday afternoon.

But I am sure that other people will join in if I make a mistake.

I would make your own brand new symbol catalogue. You can't undo it if you save over the top of an installed one ;)

Well, you can undo it, but you would need to reinstall at least some of your app or add ons.