def=defines a group of vertices on which separate operations may be performed
Flash3DInstance..model[modelID].createVGroup(newVGroupID, vertexArray);
The format for the vertexArray is: [vertex0, vertex1, vertex2...]
&sam=//takes the cube model and skews it using a VGroup
myWorld = new Flash3D(270, 200, 0);
c = myWorld.newModel("myCube", "cube");
c.createVGroup("topSide", [0,1,4,5]);
c.translate(50,0,0, c.vGroup["topSide"]);
c.rotate(0,30,0);
myWorld.render();