A loop is an entry or a group of entries that you can repeat one or more times. Syntax diagrams show loops as a return path above the main path, over the item or items that you can repeat:
Read loops from right to left.
The following conventions apply to loops:
|there is a maximum number of entries allowed||the number appears in a circle on the return path.
In the example, you may type cname a maximum of 4 times.
|there is a minimum number of entries required||the number appears in a square on the return path.
In the example, you must type at least three groups of column names.
|a separator character is required between entries||the character appears on the return path.
If the diagram does not show a separator character, use one space character.
In the example, the separator character is a comma.
|a delimiter character is required around entries||the beginning and end characters appear outside the return path.
Generally, a space is not needed between delimiter characters and entries.
In the example, the delimiter characters are the left and right parentheses.