A somewhat peculiar blend between Franz-Lisp and C, with a large set of various CAD primitives. It is owned by Cadence Design Systems and has been used in their CAD frameworks since 1985. It's an extension language to the CAD framework (in the same way that Emacs-Lisp extends GNU Emacs), enabling you to automate virtually everything that you can do manually in for example the graphic editor. Skill accepts C-syntax, fun(a b), as well as Lisp syntax, (fun a b), but most users (including Cadence themselves) use the C-style.
[Jonas Jarnestrom <firstname.lastname@example.org>].