What does 1 Chronicles 6:16 mean?

Heman's family line went like this: Heman was the son of Joel, Joel was the son of Samuel, Samuel was the son of Elkanah, Elkanah was the son of Jeroham, Jeroham was the son of Eliel, Eliel was the son of Toah. 1 Chronicles 6:16 - Modern Text Bible

(This verse repeats and expands Heman's ancestry, connecting him back through several generations.)