Typographical conventions

Denotes text that can be entered at the keyboard, such as commands, file and program names, and source code.

Denotes a permitted abbreviation for a command or option. The underlined text can be entered instead of the full command or option name.

Denotes arguments to commands and functions where the argument is to be replaced by a specific value.

Denotes language keywords when used outside example code.

Highlights important notes, introduces special terminology, denotes internal cross‑references, and citations.

Highlights interface elements, such as menu names. Also used for emphasis in descriptive lists, where appropriate, and for ARM processor signal names.