There's some more in-depth documentation in the repo in doc/user_guide.txt, at around line 520-ish. It has Common Lisp style defmacro (augmented with pattern m

There's some more in-depth documentation in the repo in doc/user_guide.txt, at around line 520-ish. It has Common Lisp style defmacro (augmented with pattern matching), and Scheme-inspired defsyntax. The documentation warns that both are unhygienic, and `grep -ri gensym` didn't find anything in the repo.