Today I was going to System Properties with `Win`+`Break` and accidentally pressed `Win`+`Print Screen`. By doing this, Windows 8 RTM x86 lowered the display brightness for 2 seconds and then returned to normal.

I checked that the printscreen was copied to clipboard by pasting it on Paint, but I didn't notice any difference from a normal printscreen (by pressing only `Print Screen` button). I also checked that Windows 7 doesn't have the same behavior.

So, is this just a new "animation" for the printscreen process on Windows 8, or does it actually have a functional difference from the traditional method?