Head of a Clip vs. Tail of a Clip
A Clip is a short segment of the original media file placed on the timeline.
Clip Head refers to the Start of a single clip on the timeline.
Clip Tail refers to the End of a single clip on the timeline.
Head of Sequence vs. Tail of Sequence
A Sequence is collectively everything that is added to a Timeline. Sequences typically are made up of many different video and audio clips.
Sequence Head refers to the Beginning of the sequence, located on the timeline (sequence.)
Sequence Tail refers to the End of the timeline (sequence).
