Using FF 9.0.1.
This feature has been around for a while, but never thought to ask this question.
The feature is - you can click on a tab, and then drag it, and it separates and becomes it's own window.
Sometimes, I want to take a window and re-attach it to the other FF window I have open. Then that window becomes a tab.
Or sometimes I have grabbed the tab and moved it from the window by mistake and want to put it back.
How can I do that?
I use both Windows XP Pro and Win7.