Comment by dhosek
There is speculation that the polytonic accents in Greek (which were a late addition to the alphabet, incidentally), originally were tone markers. ΄ represented a rising tone, ` a falling tone and ῀ a rising then falling tone.
There is speculation that the polytonic accents in Greek (which were a late addition to the alphabet, incidentally), originally were tone markers. ΄ represented a rising tone, ` a falling tone and ῀ a rising then falling tone.