Well, one window is situated in the hole in the wall. Can you tell the difference? It is hard to explain unless you are sitting at the sewing machine looking out into the yard without a window.
I can't even photograph it to correctly show the actual light coming in with this Lo E3 window. If you don't have them, the only way I can explain is imagine the difference between the glare of the sun without and then with polarized sunglasses. Here, I jumped up for another photo with the window up.
There. Can you see the difference between the suns glare on the leaves under the window, and the glare that the glass covers? The quilts in here are going to love this..