fot?

[Philip Taylor]

barbara beeton wrote:
>
> A 3-letter file extension has nothing to do with DOS, which didn't even
> exist when TeX was being developed.  It's a limit of the SAIL operating
> system for the DECSystem 10, on which TeX and MF were developed. The
> limit for file names was 6.3.  Traces of this can still be seen in the
> names of the Computer Modern fonts, several of which would be more
> easily understood with a few more letters in their names.

Well, Barbara is never wrong, by definition, but CP/M, which pre-dates 
both MS/DOS and TeX, (CP/M having been born in 1974) also used an 8.3 
filen-aming convention :

> [CP/M <https://en.wikipedia.org/wiki/CP/M>] File names were specified 
> as a string of up to eight characters, followed by a period, followed 
> by a file name extension of up to three characters ("8.3" filename 
> format <https://en.wikipedia.org/wiki/8.3_filename>). The extension 
> usually identified the type of the file. For example, |.COM| indicated 
> an executable program file, and |.TXT| indicated a file containing 
> ASCII <https://en.wikipedia.org/wiki/ASCII> text. 

/Philip Taylor/

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