void text (PlayerText text, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
void closed_caption (PlayerText text, dcpomatic::DCPTimePeriod period);
void open_subtitle (PlayerText text, dcpomatic::DCPTimePeriod period);
void text (PlayerText text, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
void closed_caption (PlayerText text, dcpomatic::DCPTimePeriod period);
void open_subtitle (PlayerText text, dcpomatic::DCPTimePeriod period);