Mathematica is homoiconic. And instead of reader macros it is using configurable presentation transformers (Mathematica notebooks) for different visual represen

Mathematica is homoiconic. And instead of reader macros it is using configurable presentation transformers (Mathematica notebooks) for different visual representation (and WYSIWYG editing) of the underlying Lisp-like lists. Even graphics in Mathematica is nothing but lists internally.