Presentation files provide a multi-dimensional view of an assembly. You can use the presentation files to develop exploded view, animations, and other stylized views of an assembly to help "document" your design; where as a drawing, provides only a static view of the assembly. Presentation views are saved in a separate file called a presentation file (.ipn). Each presentation file can contain as many presentation views as needed for a specified assembly. When changes are made to an assembly, the presentation views are updated automatically. A presentation can contain only a single assembly.