Learn about clipping planes in VRED.
Volumes don't work with clipping planes.
For additional information on clipping planes, see the following:
Video captions: In the main menu bar, under Interaction open Clipping to call up the Clipping module. Check Enable Clipping to activate the clipping. Autodesk VRED creates a clipping plane that can be moved through your scene. One side of the clipping plane is made visible, and the invisible. Via Position X, Y, and Z, the clipping plane can manually be moved. With the help of Pick Position, you can, with the help of Shift and the left mouse button, set a desired position for the clipping plane. Center Position centers the plane in the selected direction. The direction parameter defines the axis orientation of the clipping plane. Set the Y value to 1 and the X value to 0 to orient the plane along the Y axis. With Invert Direction, you can flip the direction of the plane. Enable Show Manipulator to call up the manipulator tool.
In the Visualization section, you can, by deselecting Show Clipping Plane and Show Grid, hide the clipping plane and grid. Click Show Contour to make the contours visible. Under Contour Color, change the color to a bluish tone. Contour Width defines the width of the contour. With the option, Clone Contour, you have the possibility to clone your contour. More information for you on the cloning of contours available in the tutorial, Line Tube Rendering.
Open the Render Settings with the aid of the Quick Access Bar and as render mode, select Full Global Illumination. Clipping works in the Raytracing mode, as well as in the OpenGL mode. Provided that raytracing is activated, the currently selected mode finds its application. The geometry is calculated as it is actually being displayed. It is assumed that there is truly no more geometry in the invisible area.