/NUMBER_KEYS=n

    This qualifier allows you to specify the number of keys in your
    indexed file.

    Example

  $ EDIT/FDL/NUMBER_KEYS=3 TEMP_DATA

    This command begins an interactive session in which the default
    value for the number of keys in an indexed file is changed from
    1 key to 3 keys. TEMP_DATA is the name of the FDL file to be
    created.