f 
                    <span>
                        the <code class="literal">DB_USE_ENVIRON</code> or
                        <code class="literal">DB_USE_ENVIRON_ROOT</code> flags 
                        are set for the environment,
                    </span>
                    
                    
                    
                    then the environment that the application is
                    using is modifiable using the
                    <code class="literal">DB_HOME</code> environment