Information types are only semi-implemented in HH, but it is probable that MS will provide this functionality in full in Help 2. Information types allow authors to categorize topics and let users see only the topics that apply to them. For example topics might be classified on the basis of user experience, giving the category "User Experience" and the information types Luser, Hacker and Guru (for example). The user would then choose which topics to view according to their experience level.