Pages, or units, in Courseware all display a navigational bar across the top.
The navigational bar contains an arrow on either side.
If there is more than one unit in the subsection you are in, the arrows will be black. This indicates that you can use them to move between units in the subsection.
If there is only one unit in the subsection you are in, the arrows will be gray.
The navigational bar also contains icons. These icons indicate what content you might find in a particular unit. The paper 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 list icon indicates there is a quiz or question in the unit.