Am 06.07.2021 um 21:58 schrieb Bald Eagle:

> So, if anyone has any information on what I ought to be doing, that would be
> great   :)

Did I ever mention that handling of character encoding in POV-Ray v3.7 
is seriously borked?

And the decision was made to retain this borkedness in v3.8, for the 
sake of backward compatibility.

And you shouldn't be using v3.8.0-10008988 or later, as most of the 
changes they have brought will _not_ make it into v3.8.0 proper. 
Particularly not any changes regarding character encoding.


Oh, and in case you're trying this with the "ANSI_GDT" font, version 
1.0, from 1998: That one also seems to be borked, and is not helping.


As for the character codes given on that web page:

- The Alt+X codes _should_ directly translate to `\uXXXX` codes. 
Provided the borkedness of POV-Ray's TrueType handling doesn't get in 
the way, and `charset` is set to `utf8` or `sys`.

- Alt-codes starting with "0" _should_ directly translate to `chr(n)`. 
Again provided the borkedness of POV-Ray's TrueType handling doesn't get 
in the way.

- For other Alt-codes there is _some_ mapping, but it is far from 
trivial, and is related to old DOS-era character codes. And again, it is 
subject to borkedness and possibly `charset`.

- Some of those codes may only be valid for that particular font.

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