TRUE
CLIPS> (batch "dfnxexe.bat")
TRUE
CLIPS> (deffunction print-args (?a ?b $?c)
   (printout t ?a " " ?b " and " (length$ ?c) " extras: " ?c crlf))
CLIPS> (print-args 1 2)
1 2 and 0 extras: ()
CLIPS> (print-args 1 2 3 4)
1 2 and 2 extras: (3 4)
CLIPS> (print-args 1 2 (create$ a b c) (create$ d e f) 1 2 3 4)
1 2 and 10 extras: (a b c d e f 1 2 3 4)
CLIPS> (deffunction test-return ()
   (+ (eval "(gensym)") 2)
   TRUE)
CLIPS> (test-return)
[ARGACCES2] Function '+' expected argument #1 to be of type integer or float.
[PRCCODE4] Execution halted during the actions of deffunction 'test-return'.
FALSE
CLIPS> (deffunction test-return ()
  1 2 3 4)
CLIPS> (test-return)
4
CLIPS> (deffunction factorial (?a)
   (if (or (not (integerp ?a)) (< ?a 0)) then
      (printout t "Factorial error!" crlf)
    else
      (if (= ?a 0) then
         1
       else
         (* ?a (factorial (- ?a 1))))))
CLIPS> (factorial 5)
120
CLIPS> (* 5 4 3 2)
120
CLIPS> (factorial 0)
1
CLIPS> (factorial 1)
1
CLIPS> (factorial abc)
Factorial error!
CLIPS> 
(defglobal ?*cnt* = 0)
CLIPS> 
(deffunction foo ())
CLIPS> (deffunction bar ()
   (if (< ?*cnt* 10) then
      (bind ?*cnt* (+ ?*cnt* 1))
      (foo)))
CLIPS> (deffunction foo ()
  (bar))
CLIPS> (foo)
FALSE
CLIPS> (deffunction wildcard-test (?a $?rest)
  (printout t ?rest crlf)
  (bind ?rest 34)
  (printout t ?rest crlf))
CLIPS> (wildcard-test 1 2 3 4 5 6)
(2 3 4 5 6)
34
CLIPS> (dribble-off)