both the key and the key pressed down together. With this combination pressed the keyboard will now produce a different set or an uppercase version of the previous set in some cases. Notice that holding the shift key as well as the option key while pressing a letter key may create "capital" versions of what results when the same letter key is pressed while the option key but not the shift key is held. For example: results in å. results in Å. results in ç. results in Ç. results in ø. results in Ø. results in æ. results in Æ. The Option key is often used in conjunction with special keys like , , and to provide alternate functions. For example, typically produces a line break that is not interpreted as a paragraph break. Alternative buttons and menu items The key is also used to provide for alternative menu items and buttons when pressed down. Examples: Safari, Finder – the Option key causes the "Close Window" menu item to switch to "Close All Windows" when pressed down. Consequently, clicking a window's close box with the option key depressed invokes "close all" as well. This functionality is a de facto Macintosh standard and available in numerous other programs. Dock – the Option key causes the "Hide" and "Quit" menu items in the context menu of a Dock icon to switch to "Hide Others" and "Force Quit". iTunes – the Create Playlist button switches to a Create Smart Playlist button. Holding Option and clicking the green Window Zoom (+) button at the top-left forces the iTunes window into fullscreen view, rather than switching between the user-set window size and the iTunes Mini Player. iPhoto – the rotate image button toggles between a "rotate right" and a "rotate left". Menu bar items – the Sound icon will show Audio Device input / output settings instead of the volume control slider, the battery item will show the condition of the battery, the MobileMe sync item will show the last sync date/time of individual synced items and will offer additional menu items such as Sync Diagnostics, and the Wireless icon will show extended wireless network information and, in Mac OS X Lion, offer an item for launching a Wi-Fi diagnostic application (when AirPort is connected). The iPhoto example is an example of a control whose behavior is governed by a preference which is temporarily inverted