Final answer:
The Tablinum was a small room in an upper-class Roman house used to store family records and portraits.
Step-by-step explanation:
The Tablinum was a small room in an upper-class Roman house that was separated from the atrium by a wooden screen or curtain. It was used to store family records and portraits. This room was typically located near the entrance or the main reception area of the house. The Tablinum was an important space for the family to keep their important documents and display their ancestral history.