0">

<h3>Problem selection</h3>

<p>Problems can be selected:</p>

<ul>
    <li>from an index</li>
    <li>randomly: a set of problems is randomly selected in the
        current file.</li>
    <li>sequentially: the problems are given in order from the
        current or last tested problem.</li>
</ul>

<p><img src="Problem-Order.gif" width="170" height="102"></p>

<p>In each case, the number of problems to solve must be entered.</p>

<h4>Index</h4>

<p>An index is available in the <em>Problem</em> menu. Se