## The hard part : the DefaultMaster

By default, this file is located in /packages/dotlrn/www/dotlrn-master. This file then calls its own masters above : /www/site-master which calls /www/blank-master. Each file has its own goals, even if they may not be clear sometimes :

- blank-master : sets html headers, body attributes, and some text areas that are not displayed (I still haven't understood their roles ?) and it may include the toolbar (the blue-bar on top) and the footer.
- site-master : adds a css file to the header and everything between the top blue bar and the tabbed menu (user-greeting, number of members online) and a site-footer.
- dotlrn-master : adds 2 css, generates the tabbed menu (MyFiles, MyCalendar and stuff), and adds a footer.