The breadcrumbs line shows the user where he has been. A designer can place announcements or banners in the header. A counter can be placed in the footer. The bottom left frame contains the navigation bar. Here a designer will see a control panel and a course menu.
Students only see the course menu.
The designer has a great deal of flexibility in setting up the layout of his course pages. The view above uses both a navigation bar and content frame icons. The designer or student can hide the navigation bar when the content frame needs more horizontal space. The designer can permanently hide the navigation bar and use icons only. The designer can use the navigation bar only and not use any icons.