I think the term you are looking for is "homoiconicity" [1]. There's a trivial 1-to-1 map between the semantic elements the program operates on (Lisp lists of

I think the term you are looking for is "homoiconicity" [1]. There's a trivial 1-to-1 map between the semantic elements the program operates on (Lisp lists of atoms/lists, or Forth arrays of words) and the code. https://en.wikipedia.org/wiki/Homoiconicity https://en.wikipedia.org/wiki/Homoiconicity