IPN

IPN (Autodesk Inventor presentation) is one of the native file formats of Autodesk Inventor, along with IAM (Autodesk Inventor assembly), IDW (Autodesk Inventor drawing), and IPT (Autodesk Inventor part).

This format is used to create presentations connected with a model.

Links

 * Official site
 * File types and templates in Inventor
 * To create a presentation for a model
 * Presentations tutorial (video)