I am a new user of ACL 3.0.2. for Windows (free download version).
I want to know how to:

1. Step like in Turbo Pascal (F7) and the functions?
2. Set some variables to trace and see the their changes
   (In Turbo Pascal, they can be seen in a distinct windows inside the
main window which is usually located at the bottom part)

Here is a function I want to debug :

(defun foo (a b)
   (let ((*c* (cdr a))
         (*d* b))
        (eval `(let ,(mapcar #'(lambda (e)
                              `(, (car e)
                                ',(sublis (cdr a)
                                          (cdr e))))
                             (cdr a))
              <(car at ,> a)))))


3. Debug or check the contents of variables a, b, c, d, & e (esp.
   inside mapcar) when the foo function is called, and during its
execution?