The scale of symbol is usually conveniently organised within a single style, but where you have mixed styles the comparitive scales between houses and hills (for example) is at your discretion. It's a blend of what is recognisable for what it is, and what looks right to you.

A map symbol doesn't have to be accurately scaled to life. A good example of this is the size of overland mountain symbols, which are many more miles wide than a mountain could be in real life. However, they do need to be that big so people can see that it's a mountain range and not a line of squashed ants.

Nice use of the fishes... es. :)

That's because nothing is as yet set in concrete.

@RetailPleb I think the shape of what you are asking for there may be some kind of 'Encyclopaedia of CC Mapping' (based on the Tome of Ultimate Mapping and all of the 220+ Mapping Guides) in numbered parts that includes not just the core app but every part of the software. That's quite different to the hour long friendly mapping sessions we call Live Mapping, as the Tome has 754 pages, not including the appendix or index.

Ideas like this are nice, and I think most people would agree that it would be an excellent thing to have such a set of reference videos, but as most who have attempted it in the past have discovered there is just so much of Campaign Cartographer when you include all its add-ons and annual issues that actually doing it might be an impossible task.

We also have CC4 in the making, so anyone that completed such a heroic task would have to do the whole thing all over again - if they succeeded the first time.

...

EDIT: Visualising this for some reason recalled a memory of having to watch a 3 hour instructional video on how to use Affinity Designer that covered pretty much everything I've ever used in that app. I was exhausted, and have never forgotten the experience - something a bit like helpful torture.

Cities constructed entirely of cat trees beneath a giant glass dome to keep off the rain and make it nice and hot for lounging?

Recreation fields filled with mice or butterflies?

Or maybe they are pandimensional beings like the mice of Hitchhiker's Guide to the Galaxy, and have worlds and galaxies in other dimensions - whatever they look like.