$INSTALL_PATH: the installation path on the target system, as chosen by the user
$INSTALL_DRIVE: the drive letter part of the installation path on the target system, set on Windows systems, only
$APPLICATIONS_DEFAULT_ROOT: the default path for applications
$JAVA_HOME: the JavaTM virtual machine home path
$CLASS_PATH: the Class Path used mainly for Java Applications
$USER_HOME: the user's home directory path
$USER_NAME: the user name
$APP_NAME: the application name
$APP_URL: the application URL
$APP_VER: the application version
$ISO2_LANG: the ISO2 language code of the selected langpack.
$ISO3_LANG: the ISO3 language code of the selected langpack.
$IP_ADDRESS: the IP Address of the local machine.
$HOST_NAME: the HostName of the local machine.
$FILE_SEPARATOR: the file separator on the installation system
$DesktopShortcutCheckboxEnabled: When set to true, it automatically checks the "Create Desktop Shortcuts" button. To see how to use it, go to `The Variables Element <variables> Be careful this variable is case sensitve !
$InstallerFrame.logfilePath: The path to the install log. This file contains the paths of all installed files. If set to "default" then the "$INSTALL_PATH/Uninstaller/install.log" path will be used. To see how to use it, go to `The Variables Element <variables>. If this variable is not set, no install.log will be created.
<platform>, see also: Use Cases.Defines the fully qualified target installation directory per target platform. IzPack choses the most matching one according to the current platform from the list during an installation.