The best HSV explanation is in wikipedia.

Hue is a full circle or 360°.
A Hue shift, should go full circle, and come back to No Change.
In Poser HUE at 1.000 = No change.
All colors (or grayscales) stay the same.

Now, where do I go from 1.000 to do ONE full circle?

Saturation speaks for itself => from 0 to infinity.
Value also => from 0 to infinity.

Click to enlarge.
Thanks for your time.

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