docs: def set_decdel_rts(self):
          """Figure out the decimal seperator and rows to skip and set
          corresponding attributes.
          """
  
          lnr = max(self.rows2skip(','), self.rows2skip('.')) + 1
          # If EQUAL_CNT_REQ was not met, raise error. Implement!
          if self.cnt > EQUAL_CNT_REQ:
              raise PatternError('Did not find ' + str(EQUAL_CNT_REQ) +
                                 ' data rows with equal data pattern in file: ' +
                                 self.fn)
          elif self.cnt < EQUAL_CNT_REQ:  # Too few rows
              raise PatternError('Less than', str(EQUAL_CNT_REQ) +
                                 'data rows in', self.fn + '?',
                                 '\nTry lower the EQUAL_CNT_REQ')
          if self.matches_p[lnr] <= self.matches_c[lnr]:
              self.decdel = '.'   # If equal, assume decimal point is used.
              self.datrx = DATPRX
          else:
              self.decdel = ','        # Assume the lesser count is correct.
              self.datrx = DATCRX
  
          self.rts = self.rows2skip(self.decdel)