BrailDSL Support Information
Harris has more details about the internal implementation of Brail's DSL Support
Following the same line of thoughts, Alex has a similar implementation using C# 3.0. Personally, I think that Alex's implementation is cool, but it looks really similar to LISP, and that sort of scares me. I am currently reading about ANTLR, so it actually makes sense, in a weird way, except that I keep looking for the lower level implementation.