The Timeline and the Canvas display two different views of the same sequence. The
Timeline shows the chronological arrangement of clips and layered video and audio
clip items, while the Canvas provides a single view that allows you to watch your
sequence just as it will appear on a movie or television screen.

The Timeline, like the Canvas, contains tabs for all open sequences. Each sequence in
the Timeline is organized into separate video and audio tracks, which contain clip items
you’ve edited into the sequence from the Browser. Using the Timeline, you can quickly
navigate through an entire edited sequence, adding, overwriting, rearranging, and
removing clip items.