Instructions are below: (this demo is NOT optimized for file size)

Press 1 to view a Knot sample
Press 2 to view a Hitch sample

Orbit the camera view around the model by:

Keyboard: UP, DOWN, LEFT RIGHT cursor keys to rotate
Page Up, Page Down to ZOOM in/out, Right-Shift to speed up

Mouse: Hold Left-Shift and then move the mouse to rotate
center mousewheel zooms in/out

*If the page in the browser move ups and down, click the mouse in the presentation window.

This game requires
Virtools 3D WebPlayer.
Get it here:
Download the free game software player