WindowShade

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WindowShade was a control panel for the Mac OS that allowed a user to double-click a window's title bar to "roll up" the window like a windowshade. When the window was "rolled up", only the title bar of the window was visible; the part of the window that displayed the contents disappeared, allowing easier manipulation of the windows on the screen. The control panel made its debut in System 7.5.

The WindowShade control panel disappeared in Mac OS 8, when the feature was implemented as a part of the control system. A widget was added to the title bar to reproduce the functionality. The entire feature disappeared with the release of Mac OS X; since windows could be minimized to the Dock, Apple decided there was no more use for the feature. However, several third-party utilities, such as WindowShade X for Unsanity's Application Enhancer software, have brought the concept of the WindowShade back to the Mac OS.

The WindowShade control panel itself stems from a third-party utility originally written for System 7. Apple purchased the rights to this software from the developer for use in System 7.5.

GNOME, a desktop environment for Linux and Unix-like operating systems, has a similar feature: windows can be set to "roll up" when the user double-clicks the title bar of a window. Many other desktop environment or window manager for Linux and unix-like operating systems have this feature, for example KDE, IceWM, Xfce and Fluxbox.