CL21 Installation The Project CL21 is an experimental project redesigning Common Lisp. More object oriented. Add more functional programming facilities. Organize symbols into several packages. Include MOP. Syntax for regular expression. Written in pure Common Lisp. CL21 Common Lisp (let ((name "John")) (princ #"Hello, ${name}\n")) (let ((name "John")) (format t "Hello, ~A~%" name)) (defvar *hash* #H(:name "Eitaro Fukamachi")) (getf *hash* :name) (coerce *hash* 'plist) (defvar *hash* (make-hash-table)) (setf (gethash :name *hash*) "Eitaro Fukamachi") (gethash :name *hash*) (let ((plist nil)) (maphash (lambda (k v) (setf plist (list* k v plist))) *hash*) plist) (doeach ((key val) *hash*) (when (< (length key) 2) (princ #"${x}\n"))) (loop for key being each hash-key of *hash* using (hash...