Barndoor
https://support.solidangle.com/pages/viewpage.action?pageId=1081910
Material Library
https://support.solidangle.com/display/AFMUG/Material+Library
Skin
https://support.solidangle.com/display/AFMUG/Guide+to+Rendering+Realistic+Skin
Displacement
https://support.solidangle.com/display/AFMUG/Displacement