An Induction in a play

Play (theatre)

A play is a form of literature written by a playwright, usually consisting of scripted dialogue between characters, intended for theatrical performance rather than just reading. There are rare dramatists, notably George Bernard Shaw, who have had little preference whether their plays were performed...

 is an explanatory scene or other intrusion that stands outside and apart from the main action with the intent to comment on it, moralize about it or in the case of dumb show

Dumb Show

Dumb Show is a play by Joe Penhall.The three-character play, directed by Terry Johnson, premiered at the Royal Court Theatre' London, September 4, 2004. It received its American premiere at South Coast Repertory in September, 2006. It was performed at Keswick's Theatre by the Lake from...

 to summarize the plot or underscore what is afoot. Inductions are a common feature of plays written and performed in the Renaissance

Renaissance

The Renaissance was a cultural movement that spanned roughly the 14th to the 17th century, beginning in Italy in the Late Middle Ages and later spreading to the rest of Europe. The term is also used more loosely to refer to the historical era, but since the changes of the Renaissance were not...

 period, including those of Shakespeare

William Shakespeare

William Shakespeare was an English poet and playwright, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's national poet and the "Bard of Avon"...

. Example of inductions in Shakespeare are the dumb show in Hamlet

Hamlet

The Tragical History of Hamlet, Prince of Denmark, or more simply Hamlet, is a tragedy by William Shakespeare, believed to have been written between 1599 and 1601...

and the address to the audience by Puck in A Midsummer Night's Dream

A Midsummer Night's Dream

A Midsummer Night's Dream is a play that was written by William Shakespeare. It is believed to have been written between 1590 and 1596. It portrays the events surrounding the marriage of the Duke of Athens, Theseus, and the Queen of the Amazons, Hippolyta...

. Another example, in The Spanish Tragedy

The Spanish Tragedy

The Spanish Tragedy, or Hieronimo is Mad Again is an Elizabethan tragedy written by Thomas Kyd between 1582 and 1592. Highly popular and influential in its time, The Spanish Tragedy established a new genre in English theatre, the revenge play or revenge tragedy. Its plot contains several violent...

by Thomas Kyd

Thomas Kyd

Thomas Kyd was an English dramatist, the author of The Spanish Tragedy, and one of the most important figures in the development of Elizabethan drama....

, is the introduction to that play by the ghost of Andrea who preps the audience by laying out the story to come.