ublic</span> <span class="identifier">explicit_stepper_base</span> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <span class="identifier">explicit_stepper_base</span><span class="special">&lt;</span> <a class="link" href="modified_midpoint.html" title="Class template modified_midpoint">modified_midpoint</a><span class="special">&lt;</span> <span class="identifier">State</span><sp