lmao, that vim guy got blown out of the water

In Common Lisp, as opposed to Scheme, it is not possible that the car of the compound form to be evaluated is an arbitrary form. If it is not a symbol, it must be a lambda expression, which looks like (lambda lambda-list form*).

This

It means the guy enlarged the texts in his buffer by 1 level

Write a simple project with each of these languages, and you’ll get the idea