Examples

   1./COLLATING_SEQUENCE=(SEQUENCE=ASCII,IGNORE=("-"," "))

     This /COLLATING_SEQUENCE qualifier with an IGNORE option
     specified results in the following fields being compared as
     equal before tie breaking:

        252-3412
        252 3412
        2523412

   2./COLLATING_SEQUENCE=(SEQUENCE=("A"-"L","LL","M"-"R","RR","S"-"Z"))

     This /COLLATING_SEQUENCE qualifier defines a sequence in
     which the double character LL collates as a single character
     between L and M, and the double character RR collates as a
     single character between R and S. These double characters
     would otherwise appear in their usual alphabetical order. By
     default, this user-defined sequence does not define any other
     characters, such as lowercase a to z.

   3./COLLATING_SEQUENCE=(SEQUENCE=
              ("AN","EB","AR","PR","AY","UN","UL",
               "UG","EP","CT","OV","EC","0"-"9"),
               MODIFICATION=("'"="19"),
               FOLD)

     This /COLLATING_SEQUENCE qualifier defines a collating
     sequence. It includes a user-defined sequence that gives each
     month a unique value in chronological order. For example, if
     you want to order a file called SEMINAR.DAT according to the
     date, the file SEMINAR.DAT would be set up as follows:

       16 NOV 1983   Communication Skills
       05 APR 1984   Coping with Alcoholism
       11 Jan '84    How to Be Assertive
       12 OCT 1983   Improving Productivity
       15 MAR 1984   Living with Your Teenager
       08 FEB 1984   Single Parenting
       07 Dec '83    Stress --- Causes and Cures
       14 SEP 1983   Time Management

     The primary key is the year field; the secondary key is the
     month field. Because the month field is not numeric and you
     want the months ordered chronologically, you must define
     your own collating sequence. You can do this by sorting on
     the second two letters of each month-in their chronological
     sequence-giving each month a unique key value.

     The MODIFICATION option specifies that the apostrophe (') be
     equated to 19, thereby allowing a comparison of '83 and 1984.
     The FOLD option specifies that uppercase and lowercase letters
     are treated as equal.

     The output from this sort operation appears as follows:

       14 SEP 1983   Time Management
       12 OCT 1983   Improving Productivity
       16 NOV 1983   Communication Skills
       07 Dec '83    Stress --- Causes and Cures
       11 Jan '84    How to Be Assertive
       08 FEB 1984   Single Parenting
       15 MAR 1984   Living with Your Teenager
       05 APR 1984   Coping with Alcoholism