Re: new demo with cyan lines

[<br...@ph...>]

Ethan A Merritt wrote:

> But that reminds me of something else shown by the same demo.
> The axes in a 3D plot with "set hidden3d" are never obscured
> by the plotted surface. 

Which "axes" are you talking about there?  The only standard
plot element that could fit that name, i.e. the scales on the borders,
*are* hidden by the surface.

The only things that don't get hidden by the surface are arrows.  They 
would need special handling added to hidden.dem, and it would almost 
certainly still fail to correctly hide the point, especially if the 
terminal draws its own arrows.