In case it makes a difference for the design team, I want to add that the initial description is incorrect wrt to Windows 7. You cannot just use '"Windows Logo + D" key combination only' to show the desktop. There is still a (difficult to discover) clickable area in the bottom-right of the screen - I don't call it a "button" because it's not recognizable as such. See, e.g., http://www.mydigitallife.info/2009/01/14/how-to-show-desktop-in-windows-7-quick-launch-alternative/
In case it makes a difference for the design team, I want to add that the initial description is incorrect wrt to Windows 7. You cannot just use '"Windows Logo + D" key combination only' to show the desktop. There is still a (difficult to discover) clickable area in the bottom-right of the screen - I don't call it a "button" because it's not recognizable as such. See, e.g., http:// www.mydigitalli fe.info/ 2009/01/ 14/how- to-show- desktop- in-windows- 7-quick- launch- alternative/