Send Window to the Back

I'm sorry, maybe I don't understand you correctly, but this looks like the same as ALT+TAB functionality? You can activate any windows and ALT+TAB working well when you drag something.

I do use Alt+TAB but it's very limited. For example multiple folders open are merely shown as a folder icon: which is which folder?

I guess I'm hating the way Windows will bring forward any window we click on. It's annoying as it can completely cover what I was doing. I want to be able to it to the back again.

When I have finished with a window - for now - I want to send it to the back of the other windows, and focus might also go to the upper window but BETTER YET if the window I sent back retains input focus (woah!).

I tell you it's a very handy feature if you use multiple windows.

Brian