Each season had opening credits composed of footage from the episodes of that season. Each season also made an exception to the guideline by showing footage from the previous seasons, most of the time when it was needed. For example, if footage being shown was of the characters dancing, then footage of a character or characters would be shown. When originally broadcast, season two followed the guideline, but when season three began airing, the opening credits from season two were inexplicably replaced with the opening credits from season three for daytime network rebroadcasts and subsequent syndication.