@file{file-name} ¶Use the @file command to indicate text that is the name of a
file, buffer, or directory, or is the name of a node in Info. You can
also use the command for file name suffixes. Do not use @file
for symbols in a programming language; use @code.
@file is equivalent to code in its effects. For
example,
The @file{.el} files are in
the @file{/usr/local/emacs/lisp} directory.
produces
The .el files are in the /usr/local/emacs/lisp directory.