We are asking for feedback to help us determine the best (if any) value in use for 3D models inside of Adobe Acrobat and PDF files. We have provided two example interactive 3D PDF files to view and then ask you to fill out the survey. The short 10 question survey will help us set the direction for further work. [URL]http://www.immdesign.com/3dpdfsurvey.html[/URL] Thank you in advance for your help. Greg Smith Immersive Design, Inc.