+.B origin
+The origin of the track. Valid origins are:
+.RS
+.TP 12
+.B adopted
+The track was originally randomly picked but has been adopted by a user.
+.TP
+.B picked
+The track was picked by a user.
+.TP
+.B random
+The track was randomly picked.
+.TP
+.B scheduled
+The track was played from a scheduled action.
+.TP
+.B scratch
+The track is a scratch sound.
+.RE
+.TP