I'll try the Hair Texture Maker.  Thank you.

Well, BagginsBill's shader works better for me than the Giskard stuff, but BB's can't be fully implemented because Poser 5 lacks the HSV node.  Perhaps as a result, the specularity is too strong and it looks pretty bad, although this may also be due to the quality of my homemade hair textures.  The 3d texturing by Giskard produces some really ugly distortions where the x/y/z scale settings come into conflict, if and when the mesh curves around too much from one axis to another.  It also doesn't seem able to deal effectively with mesh elements which need strands to run at an angle, rather than being axis aligned.  I think strands for this may need to use a 2d procedural node, but I don't think Poser has one that will pull it off.  Hmm.  And my experiment with trans-mapping effects worsened matters significantly.

Apparently I'm not skilled enough with Poser's materials room to pull this off.  Perhaps it's possible.  Perhaps I should try learning BagginsBill's materials program....

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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.