Components are the building blocks of a project document. In addition to the tasks, resources and assignments, components are used to manage the project's data. They include:
Views, tables, filters, groups, calendars, reports, forms, toolbars, maps, and and VBA modules.
The Organizer can be used to manage components within the project document and between project documents.
A subsystem, assembly, subassembly or other major element of an end item.