code: func (dt *DbfTable) RowIsDeleted(row int) bool {
  	offset := int(dt.numberOfBytesInHeader)
  	lengthOfRecord := int(dt.lengthOfEachRecord)
  	offset = offset + (row * lengthOfRecord)
  	return dt.dataStore[offset:(offset + 1)][0] == 0x2A
  }
docs: //RowIsDeleted returns whether a row has marked as deleted