the output class.  Usage example:</p>
<code>$string = $this->output->get_output();</code>

<p>Note that data will only be retrievable from this function if it has been previously sent to the output class by one of the
CodeIgniter functions like <var>$this->load->view()</var>.</p>


<h2>$this->output->append_output();</h2>

<p>Appends data onto the output string.  Usage example:</p>

<code>$this->output->append_output($data);</code>



<h2>$this->output->set_header();</h2>

<p>Permits you to manually set ser