void mltChangeTrackState(int track, bool mute, bool blind);
bool mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut);
bool mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
void mltDeleteTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
void mltChangeTrackState(int track, bool mute, bool blind);
bool mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut);
bool mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
void mltDeleteTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);