void set_transition_length(double start, double end, double length);
void set_transition_length(Transition *transition, double length);
void paste_transitions(double start, double end, int track_type, char* title);
+ void update_idxbl_length(int id, double dt);
+ void create_keyframes(double position, int mask, int mode);
// ================================== accounting
Track* number(int number); // pointer to track number
Track *get(int idx, int data_type);
-
private:
};