...

{
    "channels": {
        "MyAOV": {
            "description": "This a custom AOV",
            "channelType": "color",
            "channelSource": "MyAOV",
            "group": "Pixar"
        }        
    }
}

Custom Shaders

You can also add your own custom shaders by using the environment variables RMAN_SHADERPATH for OSL shaders and RMAN_RIXPLUGINPATH for C++ shaders. For the latter, an accompanying Args file is required. 

Other Examples

You can also look at some other examples of JSON config files in Blender's Text Editor , under the Templates menu.

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