fixed width font

Command, parameter, output, file name, link, button, field, URL address, or e-mail address.

bold fixed width

Input to command prompt.

fixed_width_italics

Indicates that you replace the variable with a command, parameter, file name, etc.

text1 | text2

Indicates that you can choose one of the items presented.

parameter ...

Trailing dots indicate that you can enter multiple parameters on a command line, separated by spaces.

option[,...]

Trailing dots, preceded by a comma, indicate you can enter multiple variables, separated by commas and no spaces.

[parameter]

Brackets indicate that the item inside the bracket is optional.

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Vertical ellipsis indicates that part of an example is intentionally not shown.