Thanks, Tony, but that doesn't address the actual problem.  :sad:  These general adjustments to workflow are well-documented and fairly easy to follow.  They also fail to help at all with some complicated shader effects.  The user ends up back in the position of having to navigate by guesswork, far too easily.  Which leads to more "faking".  I'm asking where we can find a proper guide to accurately creating shaders that will behave appropriately in GC by being mathematically correct rather than "faked".  There isn't one, is there?  There are separate threads, little hints hidden all over the various Poser forums.  Forums which periodically change their formatting, breaking old links and bookmarks or making old sample files, renders, and Mat Room recipe screen grabs inaccessible.  Forums with sadly rather dodgy search features.  This is haphazard documentation, ultimately, unreliable and full of holes.  One can't rely on it consistently to provide needed answers on demand.  We need a reference work, a proper manual.  Until we have one, we have necessary shader "faking".  That's just life in Poserdom, alas.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.