relArea()
 Obtain the logical number of the specified work area
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 Prototype

     ERRCODE relArea(
                          AREAP wa,
                          USHORT relNum,
                          USHORTP nArea
                       )

 Arguments

     wa is a pointer to self.

     relNum is an unsigned short integer that specifies the relation
     number for which to obtain the work area number.

     nArea is a pointer to an unsigned short value that determines the
     number of the work area.

 Description

     relArea() obtains the CA-Clipper SELECT() area of the child relation
     referenced by relNum.  relNum is a one-based number.

 Default Behavior

     relArea() implements the behavior of the CA-Clipper function
     DBRSELECT().  It scans relations for the work area at wa and returns the
     area number of the child work area.

 Implementation Notes

     .  If this method is reimplemented, be careful to return the area
        number for the relation at relNum-1 since relNum is a one-based
        number.

 Files  Header file is Rdd.api.