IDW (file format)
From GICLWiki
Extension: .idw
System: AutoDesk Inventor drawing file
Description: Thanks to Rick Becker, TetraTek Products, Inc.
Extension: IDW
Program and/or Extension Function: Inventor
Company: Autodesk, Inc.
Specific Notes: The Autodesk Inventor product line provides a set of design applications and 2D transition tools to help manufacturing companies move to 3D.
File Classification: CAD/CAM
Identifying Characters: (None or Unknown)
Program ID: (None or Unknown)
General Notes: (None)