I te pūhoro Morse, e tohu ana te āhua "M" i te raupapa -- E pā ana ki:
Arā, he rua ngā tohu roa (dashes). Ka whakamahia tēnei whakakotahi i te pūhoro Morse hei tohu i te āhua "M" i te telegrafi me te whakawhiti rōngia.