The example "OS X 10.10 Yosemite - Apple menu" shows usage of menu elements in design of user interface (UI).
"The Apple menu, which contains frequently used items, is located in the upper-left corner of your screen. To open it, click the Apple icon." [support.apple.com/kb/PH3745]
The graphic user interface (GUI) example "OS X 10.10 Yosemite - Apple menu" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mac OS User Interface solution from the Software Development area of ConceptDraw Solution Park.