Node to produce the upper curve of a hyperbola, and its focus point.
"a" and "b" are the semi axes. The node uses exponential equations for cosh and sinh.

A tangent from an end point can be built, but there are two of them, which seems wrong.
One tangent passes through the origin, and the y intercept is Not the Conic command apex point.
The second tangent passes through the y axis a bit lower down, and using this apex point,
the MoI conic command can produce the same hyperbola curve visually.
Upon zooming way in, the MoI conic nurbs curve is slightly different, probably due to the limited
number of points used for the node program.

There is probably some formula for calculating the Conic command parameters from a and b...

The new Dimension commands are very useful for labeling the geometry.

- Brian

Corrected faulty hyperbola node. I wondered why the ends were drooping:-)
(Note that using Michael's Hyperbola script is preferable.)