Charlotte Cooks

Programs produced by WTVI PBS Charlotte for broadcast by others comply with the captioning quality standards embodied in Section 79.1(j)(2) of the rules of the Federal Communications Commission.

Here's the link to the FCC guide on captioning rules:
https://www.fcc.gov/consumers/guides/closed-captioning-television

Here's the link to the federal rule language:
Title 47, Section 79.1