d><p>The initial state. <code class="computeroutput"><a class="link" href="const_step_time_iterator.html" title="Class template const_step_time_iterator">const_step_time_iterator</a></code> stores a reference of s and changes its value during the iteration. </p></td>
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<td><p><span class="term">Returns:</span></p></td>
<td><p>The const step time iterator. </p></td>
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