Pages, or units, in Course all display a navigational bar across the top.
The navigational bar contains a "Previous" and "Next" button on either side.
The buttons will move you sequentially through the units, or pages, in your course, and throughout the subsections and sections labeled in the left-hand sidebar.
When you reach the first or last unit in the course, the buttons will be grayed out.
The navigational bar also contains icons. These icons indicate what content you might find in a particular unit. The book icon indicates that an i-framed PDF file, HTML or plain text will be found in the unit. The film strip icon indicates that there is a video in the unit. A pencil icon indicates there is a quiz or question in the unit.