The use of one or more semicolons is older than Common Lisp. Maclisp had it in the 1970s, but earlier with different semantics - it had semantics for formatting

The use of one or more semicolons is older than Common Lisp. Maclisp had it in the 1970s, but earlier with different semantics - it had semantics for formatting code. Then it was changed a bit with the use of Emacs.