1. Stage Call: The actor might give a loud, clear call, such as "Places!" or "Curtain up!" This is a traditional way of signalling the beginning of a performance and is often used in theatre productions.
2. Spotlight: A spotlight might be directed on the actor, drawing the audience's attention to the stage. This is often used in conjunction with a stage call or other introduction.
3. Music or Sound Effects: The start of a play may be signalled by music or sound effects. This can help to create atmosphere and set the tone for the performance.
4. Movement or Gesture: The actor might make a significant movement or gesture to indicate the beginning of the play. This could involve stepping forward, raising a hand, or making eye contact with the audience.
5. Dialogue: The actor might begin speaking the first lines of the play, which can serve as a signal that the performance has started.
6. Curtain: In traditional theatre productions, the curtain rising is a clear indication that the play is starting.
It's important to note that the specific method used to indicate the start of a play can vary depending on the production and the director's vision. These methods help to create a clear transition from the pre-show preparations to the start of the performance, allowing the audience to focus their attention on the stage.