Hello, how are you, friends ?
I want to say sorry to some of you about asking the common question of lisp,
not the specific  question of Allegro Common LISP because actually I don't
know that this mailing list isn't used for that.
As I told you, I have just studied Allegro Common LISP and I have never
studied Common LISP before, so when I was confused about my problem and also
I didn't know to who I must ask. Then  I surfed in Internet to look for the
LISP mailing list and finally I found this mailing list. Then, I sent my
problem to this mailing list soon.
I promise that I won't ask about the introductory question about lisp and I
will ask about the questions of allegro common lisp. I hope you could
understand me and I will try your suggestions.

Yours sincerely,
Augustina