Use the following description to
read the syntax diagrams in this information.

The >>--- symbol indicates the beginning of a syntax diagram.
The ---> symbol indicates that the syntax diagram is continued on the next line.
The >--- symbol indicates that the syntax diagram is continued from the previous line.
The --->< symbol indicates the end of a syntax diagram.
Diagrams of syntactical units other than complete statements start with the >--- symbol and end with the ---> symbol.
If choosing one of the items is optional, the entire stack appears below the main path:
>>-required_item--+------------------+------------------------->< +-optional_choice1-+ '-optional_choice2-'
If one of the items is the default, it appears above the main path and the remaining choices are shown below:
If the repeat arrow contains a comma, you must separate repeated items with a comma: