Hi HN, author here. This builds on the very same AutoLISP Interpreter, i did for: https://news.ycombinator.com/item?id=46393271

The Lisp can be used to define the GLDF product in the LISP REPL, some files are in the wasm bundle, so for the demo you can simply: Click the [λ Script (Lisp)] Button and it will create the GLDF as defined in the LISP, and also start some Animation, tilting the light fixtures, changing Variants (and as such housing and light color) and some camera movement