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Texinfo has commands for indicating just what kind of object a piece
of text refers to. For example, email addresses are marked by
@email; that way, the result can be a live link to send email
when the output format supports it. If the email address was simply
marked as “print in a typewriter font”, that would not be possible.
| • Useful Highlighting: | Highlighting provides useful information. | |
| • @code: | Indicating program code. | |
| • @kbd: | Showing keyboard input. | |
| • @key: | Specifying keys. | |
| • @samp: | Indicating a literal sequence of characters. | |
| • @verb: | Indicating a verbatim sequence of characters. | |
| • @var: | Indicating metasyntactic variables. | |
| • @env: | Indicating environment variables. | |
| • @file: | Indicating file names. | |
| • @command: | Indicating command names. | |
| • @option: | Indicating option names. | |
| • @dfn: | Specifying definitions. | |
| • @abbr: | Indicating abbreviations. | |
| • @acronym: | Indicating acronyms. | |
| • @indicateurl: | Indicating an example url. | |
| • @email: | Indicating an electronic mail address. |