void detach_transition();
// Determine if silence depending on existance of asset or plugin title
virtual int silence();
+ void mute();
// Media edit information
// Units are native units for the track.
int channel;
// ID for resource pixmaps
int id;
+// ID for selection groups
+ int group_id;
// User defined title for timeline
char user_title[BCTEXTLEN];
int is_plugin, is_selected;