Normally I use Photoshop CS 5 tabbed (one file visible at a time). I need to tile them all so I can compare their color temperatures (thanks cheap Android camera that changes color temp and saturation every shot). Window/tile... is easy enough, but it gives me square tiles for 16:9 pix. I am trying to adjust that and move them around.
I'm dragging the windows by their top bar (obviously). When I drag one near (within 20 pixels of) the top of the workspace, the edge of the entire workspace gets a blue margin, and the file/window gets "gray" (fades out). Boom! It's alone in the workspace. All the other files are hidden. I've tried many things to bring them back, but the only thing that works is going to the Window... menu and picking every single one, one pulldown per file. Very clunky with 15 files.
So first, when this "Edge turned blue, document got gray, all other documents disappear" situation is inflicted upon me, how do I get back to where I was (all documents visible) without having to manually select 15 files?
Second, what is that feature? And how do I actually wield it for productive use?