u/phillybhatesme

https://preview.redd.it/ut55fjng5gwg1.jpg?width=1911&format=pjpg&auto=webp&s=e269f27f04fca394457530955ab6b71cf6b359f6

I don't know what C means, but I understand that CV means barre the 5th fret. What does the 3 after that mean?

Same question for CVII 6.

Thanks!