o lists of symbols:</p>
<pre><code class='lisp'>POFTHEDAY&gt; (defparameter *diff*
             (make-instance &#039;difflib:sequence-matcher
                            :a &#039;(:one :two :three :four :five :six)
                            :b &#039;(:one :three :four :seven :eight)))

POFTHEDAY&gt; (difflib:get-opcodes *diff*)
(#&lt;DIFFLIB:OPCODE :EQUAL   0 1 0 1&gt;
 #&lt;DIFFLIB:OPCODE :DELETE  1 2 1 1&gt;
 #&lt;DIFFLIB:OPCODE :EQUAL   2 4 1 3&gt;
 #&lt;DIFFLIB:OPCODE :REPLACE 4 6 3 5&gt;)</code></pre