The URL to the shader was meant to go with this and the image just be a thumbnail for it. You can tweak the spacing, dimensions, and padding of the windows and more with it. This is for background skyscrapers to add to the environment.
Oh, that's awesome. I didn't even realize it was a shader (despite it saying shader right in the title!) I'll have to mess around with it sometime. I could see a lot of uses for this.