The OCCURS clause defines multiple occurrences (or repetitions)
       of a field or group of fields. The multiple occurrences, called a
       list, create a hierarchy in the domain.

       The OCCURS clause has two formats: one format for a fixed number
       of occurrences and one for a variable number of occurrences. Each
       is described in the following sections.

       To define a fixed number of occurrences use the following format:
       OCCURS  n  TIMES

       To define a variable number of occurrences use the following format:
       OCCURS  min  TO  max  TIMES DEPENDING ON  field-name