This notation is used in syntax descriptions:
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This type style |
Indicates an element of syntax, a reserved word, keyword, a filename, computer output, or part of a program example. The text appears in lowercase, unless uppercase is significant. |
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This type style |
Indicates the text you enter as input. |
|
This type style |
Indicates a placeholder for an identifier, an expression, a string, a symbol or a value. Substitute one of these items for the placeholder. |
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[items] |
Indicates optional items. |
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[items | item] |
Indicates the possible choices. A vertical bar (|) separates the items. Choose one of the items enclosed in brackets. |