The Broken Hourglass - The Scripting System @ Official Site

Planewalker's latest weekly update on The Broken Hourglass describes the scripting system.  It gets a little technical but here's the intro:

The Broken Hourglass uses a novel scripting language under the hood called wscript. Here's the official definition of wscript:

The WeiNGINE scripting language wscript is a strongly-typed functional programming language with parametric polymorphism, first-class functions, and variable updates in the style of Objective CAML.

Don't worry--you don't have to understand all of those terms in order to successfully edit and compose scripts in a WeiNGINE game. (Although it certainly doesn't hurt.)