Final answer:
In 'Oedipus at Colonus,' Oedipus instructs Theseus not to disclose his burial location to anyone, emphasizing the importance of that secret place.
Step-by-step explanation:
In the play Oedipus at Colonus, Oedipus tells Theseus not to reveal his burial spot to anyone. This is an important aspect of the plot as Oedipus's final resting place holds significant power and is meant to be kept secret to protect it from being defiled or used improperly. Oedipus, even in death, wishes to maintain control over his story and the impact of his life, making this request to Theseus a crucial part of their agreement.