Interpreting Syntax Diagrams

The following legend has been provided to help you read the syntax diagrams provided for each statement and command:

italics in lowercase: Signifies a variable for which the operator must supply information.
[ ] Brackets: Indicates an optional variable. If brackets are excluded, then you are required to specify at least one variable.
{ } Braces: Indicates a list of mutually exclusive (meaning you must specify only one) constants separated by a vertical bar or bars {|}.
Underlined Text: Indicates the default variable.

Note: Positional parameters, keywords, and operands are indicated by indented text in the syntax diagrams.