Full_Description

   You can specify that records are to be conditionally included
   in an output file. After defining a condition in a /CONDITION
   qualifier, specify record selection in an /INCLUDE qualifier
   requesting that records satisfying the condition are to be
   included in the output file.

   You can specify multiple /INCLUDE and /OMIT qualifiers in
   a specification file. The order in which you specify them
   determines the order the input records are tested for inclusion.
   After the last /INCLUDE qualifier, all records that have not
   already been included or explicitly omitted are omitted.

   You can unconditionally include any records not previously
   omitted or included by specifying /INCLUDE without a condition.

   When sorting multiple record formats, one /INCLUDE qualifier
   should be specified for each different record format among the
   records to be sorted. If you do not specify a KEY option within
   the INCLUDE qualifier, Sort assumes the default key definitions.
   If the KEY is specified in the /INCLUDE qualifier, the default
   key definitions are not used. The order of the KEY fields in the
   /INCLUDE qualifier determines how the internal key is built for
   sorting. The order of the DATA fields in the /INCLUDE qualifier
   determines the way the output record is formatted. If you specify
   a key or data field in an /INCLUDE qualifier, you must define all
   other key or data fields in the record.