verbatim ¶Synopsis:
\begin{verbatim}
literal-text
\end{verbatim}
A paragraph-making environment in which LaTeX produces as output
exactly what you type as input. For instance inside literal-text
the backslash \ character does not start commands, it
produces a printed ‘\’, and carriage returns and blanks are taken
literally. The output appears in a monospaced typewriter-like font
(\tt).
\begin{verbatim}
Symbol swearing: %&$#?!.
\end{verbatim}
The only restriction on literal-text is that it cannot include
the string \end{verbatim}.
You cannot use the verbatim environment in the argument to macros, for
instance in the argument to a \section. This is not the same as
commands being fragile (see \protect), instead it just cannot work,
as the verbatim environment changes the catcode regime before
processing its contents, and restore it immediately afterward,
nevertheless with a macro argument the content of the argument has
already be converted to a token list along the catcode regime in effect
when the macro was called. However, the cprotect package can
help with this.
One common use of verbatim input is to typeset computer code. Some
packages offer many features not provided by the verbatim
environment; two of the most popular are listings and
minted. For example, they are capable of pretty-printing,
line numbering, and selecting parts of files for a continuing listing.
A package that provides many more options for verbatim environments is
fancyvrb. Another is verbatimbox.
For a list of all the relevant packages, see CTAN (see CTAN: The Comprehensive TeX Archive Network),
particularly the topics listing
(https://ctan.org/topic/listing) and verbatim
(https://ctan.org/topic/verbatim).