ONTENTS --- If provided, uses the contents to fill the new space. If |N| is greater than the
             length of this sequence, FILL is used to fill the rest of the space if it is
             provided. If not, an error is signalled. No matter whether N is negative or
             positive, the content is filled in from left to right in the order it is given.</pre></div> </article> </li>  <li> <article class="definition function callable" id="FUNCTION ARRAY-UTILS:ENSURE-ARRAY-SIZE"> <header> <span class=