The upper left hand box is called the viewer. It is where you view individual clicks.
The box in the lower left hand corner is called the bin. It is where you store your clicks. It holds all of your media: pictures, stills, and voice overs.
In the upper right hand corner, it is called the canvas. The canvas shows what’s playing under the play head in the timeline. It is where you see your potential final product.
Finally, in the lower right hand corner you have the timeline. The timeline is where you build (assemble) your story.
The red line is called the play head. It shows what at a certain point is being shown.