File extension is used by MicroSim PCBoard now OrCAD. Aperture information report.File extension APR is related to ArcView project file.A Project file can be thought of as being a folder that stores ArcView Documents. Actually, Projects do not contain duplicates of spatial or tabular data, but merely stores "pointers" to the original data as well as storing the Project GUI display format.
Project file created by Apadana, a multimedia authoring application; contains text, graphics, objects, animation settings, and other embedded multimedia content; used for creating interactive presentations, user interfaces, and other multimedia applications.