Spc.MakePlane: Return an elementary plane object
In JerBoon/vecspace: Build a Hierarchy of Objects in 3D Euclidean (x,y,z) Space

Return an elementary plane object

1 2	Spc.MakePlane(point, normal, properties = NA, direction.north = NA, direction.east = NA)

`point`	A point on the plane
`normal`	A vector which is normal to the direction of the plane
`properties`	Package-independent object defining additional plane properties. Default NA
`direction.north, direction.east`	Nominal north and east directional vectors along the plane. If supplied, an intersect will also calculate and return components $north and $east, as the amount of direction of north and east the intersect is from the plane centre point. Alse, where supplied, none of north, east or normal should be parallel.