What happens in the exposition in the play as you like it?

In the exposition of Shakespeare's "As You Like It," we are introduced to the primary characters and the setting. The play opens in the court of Duke Frederick, where we learn about the conflict between him and his brother, Duke Senior, who has been usurped and lives in exile in the Forest of Arden. We also meet Rosalind, the daughter of Duke Senior, and her cousin Celia, who form a close bond. Their decision to flee to the Forest of Arden sets the stage for the ensuing adventures and themes of love and identity.