Radio 4 in Four - Why do we have punctuation? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - Why do we have punctuation? - ÃÛÑ¿´«Ã½ Sounds
Why do we have punctuation?
Keith Houston talks about punctuation symbols and how they came to exist.
Keith Houston talks about punctuation symbols and how they came to exist.