al_error
                  </p>
                </td>
<td>
                  <p>
                    Messages reporting user or system originated fatal errors. For
                    example, memory access violation. Also all the messages describing
                    failed assertion on <code class="computeroutput"><span class="identifier">REQUIRE</span></code>
                    level (<a class="link" href="../testing_tool_ref/assertion_boost_test_universal_macro.html" title="BOOST_TEST"><code class="c