This must be where we think about code very differently. Most code has a tree structure, though many put the root token outside the brackets that mark it. Lang

This must be where we think about code very differently. Most code has a tree structure, though many put the root token outside the brackets that mark it. Languages like C, Java and Rust use brackets to express their tree structure much like Lisp does, though they use more flavors of bracket than Common Lisp. Python uses indentation, but it's still expressing a tree. Ruby, Lua, BASIC, and others add keywords, but the stuff inside `do ... end` is still a branch of a tree. Without a structural editor, I'm still building a tree, but I have to keep more of it in my head.