95dc162e_Glossary_of_Dance_Terms__m_Dance_Dictionary_from_Webref
Comma [Abbreviations] ,
In abbreviated descriptions of dance steps (as opposed to complete sentences), a comma indicates the end of one beat of music. For instance, "fwd, fwd, cl;" represents three dance steps on three beats of music, perhaps a waltz measure: step forward on the left foot, forward right, and then close left to right — a forward waltz.
Glossary of Dance Terms
Description Glossary of Terms and Abbreviations from BallroomDancers.com Dance Dictionary from Webref