tch' (false).
        </p>
<p>
          You can use this parameter to switch between these modes, by passing the
          parameter value to the <code class="computeroutput"><span class="identifier">output_test_stream</span></code>
          constructor. The value of the command line parameter is available using
          call like this:
        </p>
<pre class="programlisting"><span class="keyword">bool</span> <span class="identifier">is_save_pattern_flag_set</span> <span class="special">=</span> <span c