What is the 4th wall in acting?

What is the 4th wall in acting? fourth wall, in theatre, television, film, and other works of fiction, an imaginary wall between actors and their audience. The wall is invisible to the audience and opaque to the actors. Thus, performers act as if the audience is not there, and the viewer becomes a kind of voyeur, observing the narrative.

fourth wall, in theatre, television, film, and other works of fiction, an imaginary wall between actors and their audience. The wall is invisible to the audience and opaque to the actors. Thus, performers act as if the audience is not there, and the viewer becomes a kind of voyeur, observing the narrative.