$ clisp <...snip...> [1]> (load "palindromep.l") ;; Loading file palindromep.l ... ;; Loaded file palindromep.l T [2]> (load "arithmetic.l") ;; Loading file arithmetic.l ... ;; Loaded file arithmetic.l T [3]> (load "constructors.l") ;; Loading file constructors.l ... ;; Loaded file constructors.l T [4]> (load "facpow.l") ;; Loading file facpow.l ... ;; Loaded file facpow.l T [5]> :(trace factorial) :|| [6]> ;; Tracing function FACTORIAL. (FACTORIAL) [7]> :(trace power) :|| [8]> ;; Tracing function POWER. (POWER) [9]> (factorial 5) 1. Trace: (FACTORIAL '5) 1. Trace: FACTORIAL ==> 120 120 [10]> (factorial 10) 1. Trace: (FACTORIAL '10) 1. Trace: FACTORIAL ==> 3628800 3628800 [11]> (power 2 16) 1. Trace: (POWER '2 '16) 1. Trace: POWER ==> 65536 65536 [12]> (power 5 4) 1. Trace: (POWER '5 '4) 1. Trace: POWER ==> 625 625 [13]> (bye) Bye.