Contains components and templates used by UCB's Hierarchy Content Provider (HCP). Specifies an entry of the hierarchy. There are two types of entries: folders and links. Folders are containers for other hierarchy elements. Links are pointers to any other resource. Specifies the title of an entry of the hierarchy. Specifies the target URL of the entry of the hierarchy. Specifies the type of the hierarchy entry. Currently supported: Link (0) and Folder (1). Specifies the children (other hierarchy entries) of the item. Contains a set of top-level entries of the hierarchy.