How do I comment out sexps in elisp code?

Question

What is the preferred way to comment out sexps in elisp code? I have been wrapping my sexps in (if nil ...) so far.

Answer 1

C-M-@ M-; comments current sexp.

C-M-@ stays for mark-sexp and M-; knows how to correctly comment out a region, taking the current mode into account. Commands to mark objects are described here.