The Section, SectionGroup and SectionsLibrary objects and their associated lists and collections represent the hierarchy of the sections library and assist in the manipulation of this data. Each group of sections within the sections library is represented by a SectionGroup object. The sections within each of the groups are stored as a collection of Section objects. This object encapsulates and the information about a single section such as its names and section properties. The sections library itself is managed via the SectionsLibrary object that is responsible not only for storing the data but also for the opening and saving a sections library within Multiframe.