The following rules apply to the syntax diagrams that are used in this information:
Read the syntax diagrams from left to right, from top to bottom, following the path of the line.
The following conventions are used:
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 a syntax diagram is continued from the previous line.
The --->< symbol indicates the end of a syntax diagram.
Required items appear on the horizontal line (the main path).
Optional items appear below the main path.
If an optional item appears above the main path, that item has no effect on the execution of the
syntax element and is used only for readability.
If you can choose from two or more items, they appear vertically, in a stack.
If you
must choose one of the items, one item of the stack appears on the main path.
If choosing one of the items is optional, the entire stack appears below the main path.
If one of the items is the default, it appears above the main path, and the remaining choices are
shown below.
An arrow returning to the left, above the main line, indicates an item that can be repeated.
If the repeat arrow contains a comma, you must separate repeated items with a comma.
A repeat arrow above a stack indicates that you can repeat the items in the stack.
Keywords, and their minimum abbreviations if applicable, appear in uppercase. They must be
spelled exactly as shown. Variables appear in all lowercase italic letters (for example,
column-name). They represent user-supplied names or values.
Separate keywords and parameters by at least one space if no intervening punctuation is shown in
the diagram.
Enter punctuation marks, parentheses, arithmetic operators, and other symbols exactly as shown
in the diagram.
Footnotes are shown by a number in parentheses; for example, (1).
