The window "Curve: X(t)" displays the curve X(t), and its Frenet Frame.

The window "Unit Tangent (T), Unit Normal (P), and Unit Binormal (B)" displays the Frenet Frame at the origin, and B'(t

The window "Torsion(t)" graphs the torsion of X(t).

You can change t

As in previous demos there is a "Show Color Spectrum" checkbox.