ANSI Common Lisp   6 Iteration   6.1 The LOOP Facility   6.1.5 Unconditional Execution Clauses

6.1.5.1 Examples of unconditional execution

;; Print numbers and their squares.
;; The DO construct applies to multiple forms.
 (loop for i from 1 to 3
       do (print i)
          (print (* i i)))
1 
1 
2 
4 
3 
9 
  NIL