bug#40671: [DOC] modify literal objects

[Dmitry Gutov]

On 29.04.2020 02:10, Paul Eggert wrote:
> The "do not touch" values are called "constants" in the documentation now, just
> as they are in the documentation for the other languages.

In other languages, constants are something you can't change.

> I don't see why values
> that should not change should be called "mutable".

Mutable values are ones the user _can_ change. It's a structural thing.

> And even if we called these values "mutable", I don't see why the documentation
> should distinguish among the various types of "mutable" values that should not
> change.

Because the user sees strings and conses in both cases. All mutable 
values, and yet changing some of them is a bad idea (even though Emacs 
will most likely let you).

> Generally speaking, the Elisp documentation should just say "you shouldn't
> change these objects", like it does for C/C++/etc.

Do you see me arguing against that?