This tutorial explains how to create a simple virtual lab. To follow along with this tutorial, sample data can be downloaded:
http://www.c-motion.com/download/YouT...
More information about this topic can be found on the C-Motion wiki page: http://www.c-motion.com/v3dwiki/index...
A Virtual Laboratory is not a physical segment in Visual3D but is equivalent to a physical segment to the effect that it has a Segment Coordinate System that can be used to represent the laboratory (or other objects) and has an associated surface model that can be animated as part of the scene. A typical use of the Virtual Laboratory is to represent the floor so that motion capture markers can be projected onto the floor.