[propbeanie]

The boys got a "projector" that could do that from their computers a few years ago. It does distort things though, if not perpendicular to the surface. But don't mess with the sheet - just paint the wall white. Maybe even go outside and use the garage door...

Say, uh, you can build a script to find and potentially validate the links between the different S3D files much easier with this little technique, eh?...