One of the unique features of WW2010 is the navigation bar along the left side of each page. Each menu resembles a folder on your computer desktop. A folder contains certain items which may either be individual files or additional subfolders, like in the image below.

For each menu, there is a corresponding menu title and the available items in that particular menu are listed below. Your current location within each menu is either highlighted in yellow or indicated by a small red arrow. (The indicator used depends upon the user interface and the web browser being used). In this case, the item "ww2010 user's guide" of the top menu called "Prerelease Info" is marked. This item opens a submenu titled "WW2010 User's Guide" and the item "core technologies" is marked. Then the item "Core Technologies" also contains a submenu of topics and so forth.