4.3.4 Implementation specific options

There is currently one option that is specific to this RenderMan binding and that won't produce any RIB call but will control what gets written to the output stream:

RiOption( RI_RIBOUTPUT, RI_VERSION, 0): If this option is set to 0 directly after RiBegin() is called, then no "version" call will be generated in the RIB stream (default is 1).
New in version 1.1.