I have a dnn site that mimic a manual. I would like to include a module at the bottom of the page that has a link to "<>". This module would be applied to all pages. The other option is to create an html link on each page manually which I'm trying to avoid. Is there such a module in the market? or can it easily be created? Thanks.

You might want to take a look at the DotNetNuke Wiki module. Look at the DotNetNuke Wiki at DotNetNuke.com to see how that can be used.