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# 10. Conventions used in this document

The following typographic and usage conventions occur in this text:

Table 1. Typographic and usage conventions

Text type | Meaning
--- | ---
"Quoted text" | Quotes from people, quoted computer output.

    terminal view

Literal computer input and output captured from the terminal, usually rendered with a light grey background.

command | Name of a command that can be entered on the command line.
`VARIABLE` | Name of a variable or pointer to content of a variable, as in `$VARNAME`.
`option` | Option to a command, as in "the `-a` option to the ls command".
`argument` | Argument to a command, as in "read man `ls` ".
command `options` `arguments` | Command synopsis or general usage, on a separated line.
`filename` | Name of a file or directory, for example "Change to the `/usr/bin` directory."
Key | Keys to hit on the keyboard, such as "type Q to quit".
Button | Graphical button to click, like the OK button.
Menu->Choice | Choice to select from a graphical menu, for instance: "Select Help->About Mozilla in your browser."
Terminology | Important term or concept: "The Linux kernel is the heart of the system."
See Glossary | link to related subject within this guide.
The author | Clickable link to an external web resource.

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