CHANGED:  APPEND FROM command
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     The APPEND FROM command syntax has been changed to include the VIA
     clause as follows:

     APPEND FROM <xcFile>
        [FIELDS <idField list>]
        [<scope>] [WHILE <lCondition>] [FOR <lCondition>]
        [SDF | DELIMITED [WITH BLANK | <xcDelimiter>] |
        [VIA <xcDriver>]]

     The new VIA clause specifies the replaceable database driver (RDD) to
     use to import the desired data.  If you specify the VIA clause, you must
     REQUEST the appropriate RDDs be linked into the application.