lass="nv">implicit</span> <span class="nv">none</span>
   <span class="k">call</span> <span class="nl">prefsize</span><span class="ss">(</span><span class="mi">10</span>,<span class="mi">10</span><span class="ss">)</span> <span class="o">!</span> <span class="nv">set</span> <span class="nv">up</span> <span class="nv">drawing</span> <span class="nv">surface</span>
   <span class="k">call</span> <span class="nl">mapcolor</span><span class="ss">(</span><span class="mi">0</span>,<span class="mi">255</span>,<spa