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Some times I have to cite in my writings some file format using the "dot notation" e.g. .tiff or .dll.

So far I am using these formats:

\verb|.dll|
\textit{.dll}

Any guidelines or recommendation from the typography and publishing industry I am not aware of?

  • Well... CMS – Matsmath Aug 22 '16 at 17:49
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    You can use the \path command from url.sty, which offers the advantages that it is some kind of a standard, that it can do some reasonable line-breaking if you need that, and that you could change the definition later if a publisher wants something different. – Jim Hefferon Aug 22 '16 at 20:10
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In general I think that a typewriter font is used for "computer code" but particular publishers (or thesis style checkers) may differ. I would use either \verb|.tag| or preferably \texttt{.tag}. Others may well disagree.

1
  • In my understanding, the dot is not part of the filename extension. (See Wikipedia for example.)
  • If a file is named Letter.txt for example, then the filename extension is txt.
  • Therefore, I would classify the file as a TXT-file or txt-file using \texttt{}.

[...] usually the extension is the substring which follows the last occurrence, if any, of the dot character [...]

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