Final answer:
The address and date at a letter's beginning are called Superscription. It includes the sender's address and the recipient's address.
Step-by-step explanation:
The address and date at a letter's beginning are called Superscription, as well as being a word for a ship's direction. In a letter, the superscription includes the sender's address and the recipient's address. It is important to include the correct format of the sender's address and the date to ensure the letter reaches its intended recipient.