diff --git a/user_guide/general/controllers.html b/user_guide/general/controllers.html
index 5c51f8f..4e39b23 100644
--- a/user_guide/general/controllers.html
+++ b/user_guide/general/controllers.html
@@ -256,11 +256,11 @@
 <h2>Processing Output</h2>
 
 <p>Code Igniter has an output class that takes care of sending your final rendered data to the web browser automatically.  More information on this can be found in the
-<a href="views.html">Views</a> and <a href="../libraries/output.html">Output class</a> pages.  In some cases, however, you might want to control
-how the output gets sent to the browser, or you might want to post process the finalized data in some way.  Code Igniter permits you to 
+<a href="views.html">Views</a> and <a href="../libraries/output.html">Output class</a> pages.  In some cases, however, you might want to 
+post-process the finalized data in some way and send it to the browser yourself.  Code Igniter permits you to 
 add a function named <dfn>_output()</dfn> to your controller that will receive the finalized output data.
 
-<p class="important"><strong>Important:</strong>&nbsp; If your controller contains a function named <kbd>_output()</kbd>, it will <strong>always</strong> 
+<p><strong>Important:</strong>&nbsp; If your controller contains a function named <kbd>_output()</kbd>, it will <strong>always</strong> 
 be called by the output class instead of echoing the finalized data directly. The first parameter of the function will contain the finalized output.</p>
 
 <p>Here is an example:</p>
@@ -271,8 +271,11 @@
 &nbsp;&nbsp;&nbsp;&nbsp;echo $output;<br />
 }</code>
 
-<p>Please note that your <dfn>_output()</dfn> function will receive the data in its finalized form - including rendered benchmark and memory usage data, 
-so if you are using this feature the page execution timer might not be perfectly accurate.</p>
+<p class="important">Please note that your <dfn>_output()</dfn> function will receive the data in its finalized state.  Benchmark and memory usage data will be rendered,
+cache files written (if you have caching enabled), and headers will be sent (if you use that <a href="../libraries/Output.html">feature</a>)
+before it is handed off to the _output() function.  If you are using this feature the page execution timer and memory usage stats might not be perfectly accurate
+since they will not take into acccount any further processing you do.  For an alternate way to control output <em>before</em> any of the final processing is done, please see
+the available methods in the <a href="../libraries/Output.html">Output Class</a>.</p>
 
 <a name="private"></a>
 <h2>Private Functions</h2>