[HowTo] Open tabs under a tab in Firefox

We have been doing little bit of experiments with , Firefox about: parameters, We found couple of very interesting parameters for about, which we will be sharing with you, in the upcoming posts

When we were playing with about: parameter, We did see the source code of each local webpage opened, and we found this very interesting feature , which we will be explaining in this tutorial.

This tutorial explains how you can open one more instance of Firefox , within a single tab of Firefox ! It means you can actually make hierarchy of tabs in
Firefox, That looks something like this.

Steps:

Open Firefox, In the Web address bar, type

chrome://browser/content/browser.xul

You can open multiple tabs within the new Firefox window that is appearing below the tab !, and you can always continue creating new tabs in the parent
Firefox window!