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 GNUEmacs), 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.