That test program is real buggy. thinking will not be long til another release with these fixed and some new additions. As Andreas gets more familiar with the program and it's flow I sure it will be less buggy each update and we'll see changes that really mean added Render functionality. Man I would like to see 2 more lights, be able to select 2 VL light sources, VL lighting and Iteration Fog simultaneously, Render Reflects on d.IFS only selection like there is for Transparency and Bokeh for DoF, that would make me a Happy Camper. 

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