Workspace has become three separate sections

I am using Audition 3. My workspace displays the waveform in 3 separate sections. On the left is the waveform of the first 10 seconds and on the right, the last 10 seconds and in the centre the entire waveform. I can't work with this workspace, how do I restore the conventional simple view of the waveform?

I would be grateful for any advice you could give me.

Here's a screenshot.