ftp.nice.ch/pub/next/developer/objc/api/intuitiv3d_API.s.tar.gz#/i3dApi/Examples

AdvancedObject/
 
CustomObject/
 
Shaders/
 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.