r.RayTracing.ForceAllRayTracingEffects

I’m confused by how the console command
r.RayTracing.ForceAllRayTracingEffects

works.
If you set it to zero, does this override any currently active RT effects set in your Post Process Volume?

I notice that when I set to zero, if I check my Ray Traced reflections setting in the console it appears active.
ie
r.RayTracing.Reflections returns 1

Also if you set
r.RayTracing.ForceAllRayTracingEffects 1
does this enable ONLY those Ray Tracing effects previously enabled in your PPV, or does it enabled ALL Ray Tracing effects?