This is a right pain.
But easy enough to do.
You have to use the Ascii code for the < and > symbols.
ie; if you wanted to put a link to Google in html you would write:
<a href="http://www.google.com">Google Search</a>
But as you rightly say this would just show up as Google Search
Is you actually want to show someone that code you would have to change the < symbol to < and the > symbol to > So it would read:
<a href="www.google.com">Google Search</a>
And this will hopefully show up correctly. Hope this helps.