In Death of a Salesman, what action takes place on the apron of the stage?

's authororiginally
wanted to entitle his landmark American  The Inside of His Head to reflect
the time shifting from present to past of the , Willy Loman. In his original conception, Miller
envisioned "an enormous face the height of the proscenium arch that would appear and open
up, and we would see the inside of a man's head"; the action of the play, therefore, would
take place exteriorly and interiorly.  Circumstances intervened and Miller
changed both the title and the staging of the play. Despite this change, however, the play still
contains two types of time and action: real and remembered. This time shifting is the locus for
Willy's tragic downfall. And it is still reflected in the staging of the play. Miller uses both
the Shakespearean stage and the modern proscenium to symbolize the time shifting
in Death of Salesman. Events in the present take place on the domestic set
framed by the proscenium, but remembered events take place on the apron and the forestage. It
can be said, therefore, that Miller not only reconfigured the idea of tragedy, he also
reconfigured stage time, allowing it to symbolize the interior and exterior realities of the
principal character.