Notation Conventions

This guide uses the following conventions:

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.
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.
This type style	Indicates a placeholder for an identifier in a diagnostic message.
[item]	Indicates optional elements.
[item | item]	Indicate the possible choices. A vertical bar (|) separates the items. Choose one of the items enclosed within the brackets.
This type style	Indicates a default or a usage example.