Global constants and objects

Horde applications work with a standard set of constants:

 || HORDE_BASE || The filesystem location of Horde (defined in each application) ||
 || APP_BASE || The filesystem location of the application ||
 || APP_TEMPLATES || The filesystem location of the application's template files ||
 || APP_VERSION || The version number of the application (not a CVS revision tag) ||
Applications work with a number of standard global variables and object:

 || $conf || The configuration hash ||
 || $prefs || The user preferences ||
 || $browser || Information on the client browser ||
 || $registry || The Horde Registry ||
 || $language || The user's preferred language ||