Related Clues:

• They're studied by stars
• Writing, essentially
• Staff members, and what the circled letters in this puzzle represent
• Some scribbles
• Creases
• Staff indicators
• Sentences in film scripts
• Actor's count
• They separate fair from foul
• F and G, but not H
• E G B D F, on a staff
• Actors' dialog
• Pad filler
• Script contents
• A flat and others