VMS Help MERGE, Specification File Qualifiers, /KEY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Specification File Qualifier

    Identifies key field names, specifies sorting order, and changes
    the order of records in the output file.

    Formats

      /KEY=field-name

      /KEY=(field-name,order)

      /KEY=([IF condition-name THEN value ELSE]...value [,order])

  Additional Information (explode) :

• Qualifier Values
• Full Description
• Examples