Like JGresko said, usually S6 or S7 are associated with a specific time of the year, like fall to protect the trout and salmon during spawning season, where all fish have to be released. The bag limit will follow general law, or a specified code (such as S19- limit 2 trout) for the rest of the year that the water body is open to fishing. Also beware of CI- closed to icefishing, and the "A", "B", and "D" letter codes, the definition of these can be found at the bottom of the special codes page.
