5) rembox (expr2, FOO);
                                  BAR&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;
                       &quot;&quot;&quot;&quot;&quot;&quot;&quot;    &quot;a d - b c&quot;
(%o5)              sin(&quot;%pi x&quot;) + &quot;---------&quot;
                       &quot;&quot;&quot;&quot;&quot;&quot;&quot;    &quot;  &quot;&quot;&quot;&quot;   &quot;
                                  &quot;  &quot; 2&quot;   &quot;
                                  &quot;  &quot;h &quot;   &quot;
  