You may have tried HTML comment tags, but in an attempt to avoid overthinking this one I'm going to test it out in this post by adding two hyperlinks and commenting out the first one to compare the rendering.  I apologize if you're past this (insignificant?) test, but I'm curious as well.

(I hand wrote the html, so I'm not really sure if this is a valid test or even in the realm of the answer you're looking for.)

<!-- <a href="http://www.google.com">google</a> -->

<a href="http://www.google.com">google</a>

Cameron McCarter

I have had problems when entering html code in the editor, so I use the following.

I am entering this post, not completely sure it will work on this forum, but here is an example.    
&lt; as the left bracket, &rt; as the right, and &quot; for quotes.

In the Source / code, you enter like the following:

&lt;a&nbsp;href=&quot;http://www.tmmworld.com&quot;&gt;<br>
&lt;img&nbsp;border=0&nbsp;src=&quot;http://www.tmmworld.com/images/sm_tmmlogo.gif&quot;&gt;&lt;/a&gt;

The Result will look like this...

<a href="http://www.tmmworld.com">
<img border=0 src="http://www.tmmworld.com/images/sm_tmmlogo.gif"></a>