The Render Flag is a flag on all SOP nodes and on all Geometry components that is used to select the SOP for rendering by the Render TOP.
In order for the object to be rendered by the Render TOP:
- the SOP's Render flag must be set.
- the Geometry component that contains the SOP must have its Render flag set.
- the Geometry component that contains the SOP must be specified in the Render TOP's "Geometry" parameter.