Question: How to create geom3d point functions?

I would like to do some point and line calculations, and the geom3d package seems a good one.

But how do I define a generic point such that I can use it in a function to generate genric points and lines?


    P:=(a,b,c)->point(P, a,b,c) 

or equivalent?

I would then want to define generic lines between generic points.

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