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 bof()
 Determine logical beginning of file
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 Prototype

     ERRCODE bof(
                  WORKAREAP wa,
                  BOOLP isBof
                )

 Arguments

     wa is a pointer to self.

     isBof is used to determine the logical beginning of file.

 Description

     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->bof to isBof.

 Implementation Notes

     .  Determine wa->bof status, then call SUPERBOF().

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

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

 Files:  Header file is Rdd.api.