The document describes the stock characters of Commedia dell'arte, dividing them into two categories - The Masters and The Servants. The Masters include Pantalone, Il Dottore, Il Capitano, Isabella, and The Lovers. Pantalone is a Venetian merchant, Il Dottore fancies himself a know-it-all, and Il Capitano is a braggart soldier. Isabella is the daughter of Pantalone and part of The Lovers. The Servants, or Zanni, include characters like Arlecchino, Brighella, Colombina, and Pulcinella. They have distinct costumes, mannerisms, and personalities.