ST_CONTEXT</span></code>: this pair of braces
          defines the scope in which the diagnostic message is in effect. If there
          is no braces, the scope applies only to the following statement. <code class="computeroutput"><span class="identifier">BOOST_TEST_CONTEXT</span></code> declarations can nest.
        </p>
<p>
          With <code class="computeroutput"><span class="identifier">BOOST_TEST_CONTEXT</span></code>,
          we can further improve our initial example, by putting variable <cod