...
where <packname> is the name attribute of the according pack. If the appropriate pack <pack name="..."> defined in the installation description is selected, the condition validates true. Packs can be selected either in unattended installation installations by replaying a record of a previous installation (auto-install.xml) or interactively by the user by means of PacksPanel or its derivates, ImgPacksPanel or TreePacksPanel.
...