prologue is delivered by the Chorus, who encourages the audience to use
their imaginations to visualize the scene that is to be enacted on the
stage before them.
Chorus reappears at the beginning of each act to set the scene, to
summarize events not shown, and to announce changes of location and
passage of time. It is an acknowledgement of the limits of the theater
in presenting such epic events as the battle of Agincourt. The audience
must do its work too.