ITU Morse does specify punctuation marks and a few symbols, but they're rarely used in practice. A space is denoted by a gap equal to seven dots. https://www.

ITU Morse does specify punctuation marks and a few symbols, but they're rarely used in practice. A space is denoted by a gap equal to seven dots. https://www.itu.int/dms_pubrec/itu-r/rec/m/R-REC-M.1677-1-200910-I!!PDF-E.pdf https://www.itu.int/dms_pubrec/itu-r/rec/m/R-REC-M.1677-1-20...