The following letters are used in the diagrams for the drills.  The Letters are used to accurate signify the duties and responsibilities that each person has in the drill. 

X  =  Player  OH  = Outside Hitter
C  =  Coach  MH  = Middle Hitter
T  =  Tosser  MB  = Middle Blocker
S  = Setter  RS  = Rightside
P  = Passer  Sh  = Shagger
Ta  = Target  Co = Coverage Player
D  = Defender