Determines the type of rendering operation that will be performed, the location of the renderer, and renders the scene.
The type of renderer used: Raycaster, Raytracer, Hidden Line, Powercaster, or Powertracer. The icon in the Rendering Options window changes if you change Renderer Type. If Renderer Type is Powercaster or Powertracer, the Processors parameter becomes available. The default setting is Raycaster.
Determines whether the renderer uses all available processors (All), or only a certain number of the available processors (User Defined). This parameter is available only when Renderer Type is Powercaster or Powertracer. If Processors is User Defined, the Num Processors parameter becomes available. The default setting is All.
The number or processors the renderer uses. This parameter is only available if Renderer Type is Powercaster or Powertracer, and Processors is User Defined. If you select User Defined, the initial value is 1. The valid/slider range is 1 to 32. The value you set will be saved in User Prefs.
Automatically names the rendered image file testrender_nnnnnn, where nnnnnn is a six-digit number. If Test Render is ON, the Test Resolution parameter becomes available. The default setting is OFF.
A scaling factor applied
to the X Resolution and Y
Resolution values in the Render > Globals 
window. The slider range
is 0.1 to 1. The default setting is 0.5.
Rendering Options window buttons
Resets all Rendering Options to their default settings.
Saves the current Rendering Options settings for use by all subsequent renders.
Closes the Rendering Options window. The scene is not rendered, and any changes you have made to the Rendering Options are not saved.
Renders the scene using the current Rendering Options settings.
