Is it actually written that you can use a testform? It used to just be a grey area that wasn't really covered...
But yeh, you can use the command to view the main forum listing; in fact on my styles i release i generally link to this page with each style. I was hinting at this above.
It won't let you do anything though, linking to this page, it'll actually not allow you to click on anything on the page, which leaves it so that you can only view the main index.