The terms off-screen, off-camera, and off-stage refer to fictional events in theatre, television, or film which are not seen on stage or in frame, but are merely heard by the audience, or described by the characters or narrator. Off-screen action often leaves much to the audience's imagination. As a narrative mode and stylistic device, it may be used for a number of dramatic effects. It may also be used to save time in storytelling, to circumvent technical or financial constraints of a production, or to meet content rating standards.