Capture / ALT-Print Screen focused Window in RDP Session in Clipboard

Ok, this is primarily for me, so I can look up if I should ever forget it. Ever tried to copy a window in a terminal session to the clipboard? Usually you press ALT-PrintScreen for this. If you do this into an RDP session, you get the whole (logically) Remote Desktop. To copy only the focused window (in the RDP Terminal Session) in the clipboard, just press the key combination CTRL-ALT-Minus.