I would suggest simply the word forma.
It means all kinds of things related to shape, size, form, and such.
The linked entry in L&S (I.B.2) gives "outline, plan, design (of an architect, etc.)".
Formatting is the design of a page much like how that part of the dictionary entry describes the design of a house.
I found no attestations related to ...
An urbs is a city, an oppidum is a town.
It is quite common to use urbs to refer specifically to Rome, and the linked dictionary entry even says that oppidum is used for other cities than Rome.
You could say that urbs is a capital and oppidum is a regular city.
There are a number of ways to phrase and see it, but the crux is: urbs is bigger (in size or ...
There has to be something somewhere in Cicero …
What I did find, although it is perhaps not an exact match, is this part in Brutus where he talks about orations by Crassus that were preserved in written form and remarks that the record was incomplete:
Plura etiam [sunt] dicta quam scripta, quod ex quibusdam capitibus expositis nec explicatis intellegi ...
For adumbratio L/S gives this citation:
Fig., a sketch, outline: nulla est laus oratoris, cujus in nostris
orationibus non sit aliqua, si non perfectio, at conatus tamen atque
adumbratio, * Cic. Or. 29
The relevant verbs for surviving seem to be superesse, superstare, and pervivere.
Out of these only superstare seems to have an attested associated adjective (or noun), and that is indeed superstes.
That is the best choice in my opinion.
If you prefer to use one of the other verbs, then you could reasonably coin superens or pervivus.
The adjective vivus is a ...