COCOA tags normally have three parts in their form: (1) delimiter characters (the diamond brackets, or some other symbols not found in the text), (2) a variable or type name, and (3) a value or token name. It is a convention that the variable or type name may be dropped if the delimiters themselves can carry that meaning. For example, <> amount to the same thing. In the first form, single diamond brackets are the delimiters that separate the variable-type AUTHOR and the value-token John Palsgrave from the text. The variable or type may take any form. For example, other tags could be TITLE, DATE, PUBLISHER, etc. The value or token following it, John Palsgrave, may change, say, into other authors such as Cotgrave, Florio or Thomas. In the second form, the double diamond brackets are understood to stand for rather than or . Any other tags must use different and unique delimiters. COCOA tags of a given type, like