That tiny slip of paper every theatregoer knows (btw, Christian Dante White was terrific).A common question I see posted from time to time on theatre blogs asks what the difference is between an understudy, a standby and a swing: terms and names listed below the cast for all shows in every Playbill. This refers to actors and dancers waiting in the wings (or by a phone) forever on the alert on a moment's notice to tak…
