ed
in this mode. The session starts with the following problem in
the file and goes on in order. If the last problem in the file is
reached, the session continues with the first problem in the
file.</p>

<h4>Random mode</h4>

<p><b>Drago</b> stores a list of the number of times each problem
has been tested. In the <em>Random</em> mode, the problems are
randomly selected taking care to select first the least tested
problems. Once selected, the problems are proposed in a random
order.</p>

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