docs: def _initialise(self):
          """
          Initialises table with dictionary.
          """
          d = {'score': 0, 'pointer': None, 'ins': 0, 'del': 0}
          cols = len(self.seq1Seq) + 1
          rows = len(self.seq2Seq) + 1
          # Note that this puts a ref to the same dict (d) into each cell of
          # the table. Hopefully that is what was intended. Eyeballing the
          # code below that uses the table it looks like table entries are
          # entirely replaced, so this seems ok. Terry.
          table = [[d for _ in range(cols)] for _ in range(rows)]
          return table