ss="op">(</span><span class="st">"topicscore"</span>, <span class="st">"random"</span><span class="op">)</span>,</span>
<span>  control.init <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span><span class="op">)</span>,</span>
<span>  control.main <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span>numiter <span class=