There are two versions of Internet Explorer, one for each environment. A Web page you open in one doesn't appear in the other, so if you're trying to find your way back to a page, it helps to remember which browser you were using. In the Desktop version of Internet Explorer, you can see at a glance which pages you have open in "tabs." In Metro, each Web page fills the screen, leaving no room for tabs. Pictured at left is Internet Explorer 10.