The attributes in this category and its subcategories have a direct effect on how the objects in Maya are translated to RenderMan primitives. For this reason, they have no effect on the geometry imported in the scene by a ‘RIB Archive Node’, and they will not be affected by the "Ignored Archived Geometry Attributes".
Output Geometry
When this attribute is off, the attributes of the "Geometry Attribute Node" will be output but not the geometry of the objects that are attached to it. By default, this attribute is on.
Output Faceid
Turning on this attribute will produce a primitive variable named "faceid" that define one id number per face of the primitive. This variable can be used with the Edge Detection feature of a display to produce a wireframe outline of the primitive simply by setting the "Detected Variable" attribute to ‘float faceid’. See Layers Outlining for details.