What does R W O with slash through O mean on scratch off ticket?

R W O with a slash through the O typically indicates "Reveal Win Only" on a scratch-off ticket. This means that the player should only focus on the designated winning numbers or symbols to determine if they've won, rather than looking for additional matching numbers. The slash through the O emphasizes that the ticket's rules limit winning criteria to specific reveals. Always check the ticket's instructions for precise rules and interpretations.