So, stand-by to repel borders, then? 😉

As for alignment issues and other minor mistakes, this is all very familiar territory! The worst ones are those you find only after you've submitted something, of course, usually after the map's been published somewhere...

One alternative you might try would be not using the RGB Matrix effect, but setting up a simple rectangular polygon that covers all the map on its own, new, sheet, setting the polygon to have a solid red colour, and then adding a Transparency effect to that sheet. If you move the sheet to be below the text, but above the rest of the map sheets, that might work. You'll probably need to keep adjusting the Transparency, and probably also the colour of the polygon (likely somewhere in the reds and oranges range) to get to something you're happy with. Not guaranteed to work ideally, but it should give you more control over the final colour of your text, at least.

I'm not sure such a sheet would have much utility for all mappers. I've never had any need for such, but then I plan or sketch all my maps out on paper roughly before-hand, and simply use a bitmap scan of the hand-drawn version as the template in CC3+. If I need construction lines while mapping, as does happen sometimes, it's very easy to simply draw and then delete them once I'm finished with them. If I think I might need them again later, I save a separate copy of the FCW map file for that purpose before deleting them.

If you do find these are important, it's easy enough to create a Sheet on its own Layer (you can only freeze Layers, not Sheets, in CC3+) for use in the way you've described. If you're likely to be doing a lot of similar maps the same way, you can always save that as a personal set-up for the future having done it once. That way you can set the name and placement in the Sheets list as best-suits yourself.

You'd have to hide the Sheet before exporting, but you'd likely be doing that anyway to check the map without the construction lines getting in the way prior to that stage.

I doubt it would ever be possible to set up any single Sheet in CC that would somehow automatically "know" what colour you might expect different kinds of drawing entity to have. There are just so many variables involved - all of which you can adjust to whatever you require in CC3+ now, as Jim noted. If you might regularly require specific items of particular line thicknesses, styles and colours, it would be very easy to keep a sample of each on your "Construction Sheet" (or another Sheet set aside for such samples) that you could readily access using the "Draw like..." or "Extract properties" commands.

Thanks very much Remy!

Slightly shocked on doing a quick tally-up today, while downloading the latest Atlas version, to discover this makes 140 maps of mine now in the Atlas! I'd forgotten quite a chunk of the earlier materials I'd done, looking at the list.

Still some way behind the great leaders of Quenten and JimP of course, but not doing too badly by comparison 😊

Plus, I think once the contributions from the recent mapping contest are added, this could take us over 850 maps in all!

Looking a lot better now!

Yes, I think the walls would work very nicely for ruins too.

If the stepped outer surface was full regulated, it would also work for buildings such as ancient Mesopotamian temples, which had deliberately constructed outside walls that had this kind of "vertical recesses" patterning all round them. I've had to draw these before, both by hand and on computer, and it can be pretty tedious for a larger building plan!

For the crystal city concept, it may depend exactly how you envisage it. For a large-area map such as the Dungeon Worlds Annual will let you create, you could perhaps repurpose some of the standard CC3+ overland map symbols, like glaciers or icebergs (though you may have to get creative about hiding what are intended as water lines for the latter!), and making use of the varicolor options to recolour other features - and also with CD3 house symbols, for instance, if you wanted to map the city itself, or parts of it, in more detail.

It's definitely worthwhile to take some time to look through all the symbol catalogues you have available, and make a note of any symbols that might work in such map creation, even if that's a long way from what the symbol was originally meant to be! As you can resize any symbol in CC3+, imagine too how it might look if a given symbol were larger or smaller, or a different colour (which you can set and see while you're browsing through each symbol catalogue that includes varicolor symbols).

Just as well Wyverns can fly 😎🐲

As you might tell from my frequent use of random options in my Community Atlas maps, I've been a long-time fan of such random design systems, for all they can need a bit of nudging sometimes to get things to work out OK. I've not used the 5E system as yet, though almost exactly 20 years ago (July-August 2001), I created a classic 12-level dungeon using the random system in the original (1979) AD&D DMs Guide, each level filling an A4 page of graph paper. All done by-hand then, however. I did make a start converting it to CC3 not long after I got the program, around 2014 or 2015, I think, but that was very slow going, as I hadn't the option then to scan the hand-drawn maps to trace in CC3.

Have to say that your map looks a lot more elegant and less cluttered than any of my old ones from that dungeon set, so the 5E system may be something I should experiment with in future, perhaps...

Nothing to do with this topic, but I did just want to say very well done to C.C. Charron for creating the new Ancient Cities mapping style that's just been released by ProFantasy as June's Annual issue! Based on the "Sumerian Kinda" Forum posting here, of course!

Can't really do more than reiterate what Sue's said already re you and your mother's ongoing situation, and to hope things settle for you very soon.

With CC3+, I think we all feel for you too. Even a short spell away, and I find I've forgotten something critical... If time and circumstances allow, it might be worth checking-in on one or two of the live PF mapping sessions on YouTube - or checking them later as VOD - as Ralf usually goes through all the basics of setting up a new map, as well as whatever the session's about, for instance, which might help get you back in the swing of things a bit quicker.