It was a great technology fun bit of history my company was in a bidding war with Computer Associates for it when SGI decided to dump it, sad part was we where a profitable CBT company that had the extra development capacity to support it. Sadly we did not have the pockets that CA had and therefore where outbided, we knew it was the death of Cosmo Worlds and had to adjust course pretty rapidly, sad part was there really was no competitor for real time web based 3D at the time. VRML had a chance until Cosmo Worlds died. We ended up moving all of our CBT to the unreal engine and retreating back to the desktop. Back then I wrote a pretty popular collision detection library for VRML.