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 bof()
 Determine logical beginning of file
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 Prototype

     ERRCODE bof(
                    AREAP wa,
                    BOOLP isBof
                  )

 Arguments

     wa is a pointer to self.

     isBof is used to determine the logical beginning of file.

 Description

     bof() indicates whether the current cursor for wa is at the logical beginning
     of file.  This method provides the return value of the CA-Clipper BOF()
     function.

 Default Behavior

     Copies wa->fBof to isBof.

 Implementation Notes

     .  Determine wa->fBof status and then call SUPER_BOF().

     .  If your RDD supports relations, update relations with a
        forceRel() prior to determining wa->fBof status.

     Warning!  isBof must point to sizeof(BOOL) bytes of allocated
     memory.

 Files  Header file is Rdd.api.