> 25
or you can do it the naggum way, and define your own common-lisp base package, with DEFUN and LET shadowed to more elaborate versions. if you're sufficiently tasteful in your extension, you can even make it backwards compatible.
> 26
http://ml.cddddr.org/lispnews/
http://www.avanthar.com/healyzh/_info_/lisp.news
https://www.saildart.org/LISP.RPG%5BUP,DOC%5D