I got lost while doing a spherical warp today and in turning to the 
documentation for help, I picked up a typo. The spherical example reads:

   sphere {
   0,1
   pigment {
     hexagon
     scale <0.5/pi,0.25/pi,1>*0.1
     warp {
       spherical
       orientation y
       dist_exp 1
       }
     }
   }

It produces the spherical warp image seen. However, I believe there is a 
typo where trying to scale in y. A scale in y has no effect on the 
hexagon x,z pattern. To get the normally expected mapping ratios in a 
way similar to the cylindrical example, the scale should be changed to:

scale <0.5/pi,1,1/pi>*0.1

though what I expect was the original intent of:

scale <0.5/pi,1,0.25/pi>*0.1

gives a valid result.

Thanks for your attention.
Bill P.

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