The course is displayed in the browser window which contains a number of panes.
Toolbuttons
At the top left hand side you have the toolbuttons. These let you move forwards or backwards through the pages, go to the systems check page, and open the search.
Contents Tree
At the left hand side is the contents tree. It holds a map of the entire course. The course is given in a number chapters, each of which contains a set of pages. Most chapters end with some exercises for you to perform.
Page Titles
Along the top of the right hand area of the screen you will find the title bar. This gives the name of the present chapter and the name of this page in the chapter.
Page Content
Each page covers one topic or item. It may be split left and right into two frames with an image, extra text, or a program listing in the right hand frame. If the page is longer than the browser window you will have to use the scroll bars to move up and down.