Preference settings

1. Default settings: DefaultPreferences (never edit this topic)
   • Site name, proxy settings, access control, skin
2. Customized site settings: SitePreferences
   • Site name, proxy settings, access control, skin
3. Web-level settings: located in each Web, e.g. WebPreferences topic
   • Web specific access control, navigation links, colors
4. User-level settings: In each user's home page, e.g. WikiGuest topic
   • Settings that are only in effect when this user is logged in, such as LINKTOOLTIPINFO
5. Topic-level settings: Affecting current topic, for web applications

Preferences can be overridden by the next level down.