Brackets are used when describing optional parts of a command.

In a command description, text in italics represents information you enter. Elsewhere, italics is used for emphasis.

In a command description, bold text represents keywords or options that must be entered exactly as displayed. Elsewhere, it represents words that are used in a programmatic way rather than their normal way.

Example text

In program listings, this represents a program or something you’d enter in response to a shell or CLI prompt. Bold text here indicates exactly what you should type. If you’re viewing this information online, example text is in color.