How can I see what module positions are available on my Joomla Template?

There are a number of situations where one wants to see where the module postions are on their Joomla! site.  Here's a quick tip on how to do that.

In your browser's address bar, enter the URL of your site and then add "index.php'tp=2"  (no quotations marks).  What you have typed should look somethign like this: