What does 1 Chronicles 1:17 mean?

Shem's sons were Elam, Asshur, Arphaxad, Lud, and Aram. Aram's sons were Uz, Hul, Gether, and Meshech. 1 Chronicles 1:17 - Modern Text Bible

(Shem's line is traced, including Aram's children, who became ancestors of various Middle Eastern peoples.)