I've started the bb nylon shader--gone thru the first few steps, made the "Stockings" group. But now he says simply, "OK so load my shader." I see we are in the Materials Room. But how do I load his shader? I've put it in the library/materials/procedurals folder as an mt5 file. I can create a new node--there are a bunch of nodes listed, Math, Lighting, etc--but I dont see any Load Shader listing. How do I load the shader? I suppose this is such a primitive question that it isnt worth mentioning, except for primitive users like me.  Help!

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