The path library is very basic. Paths can be described by 4 types of interpolations (as described later), including Bezier curves of any degree, and Catmull-Rom splines.
Some path transformations are included. There is stroking, dashing and clipping transformations available. But none of these transformation are implemented perfectly, in the sense that algorithms used in the library are rather simples.
This was coded in some weeks as a way to exploit the cl-aa part of the library in a convenient way.