>
> If my babblings make it more clear, then the docs could use a
> refreshment.

Scary as it may seem, your babblings make sense.  To a simple man such as
myself, it would be better to revamp the cylinder light syntax such that it
makes sense, rather than refresh the docs.  E.g.  the radius keyword would
specify the radius of the cyliner, as would falloff.  This would seem to
make for a lot less math to figure "The axis of this cylinder is colinear
with the vector between the emission point and point_at, and the radius of
the cylinder is exactly the radius of the cone at its focal plane (if that
could be said for a spotlight :) )"

Thanks for listening.

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