The Apple Keyboard is a keyboard designed by Apple first for the Apple line, then the Macintosh line of computers. It is available in both wired and Bluetooth models.
To serve the functionality of the Mac OS (and because of historical differences), the Apple Keyboard's layout differs somewhat from that of the more ubiquitous IBM PC keyboard, mainly in its modifier and special keys. Features different from other keyboards include:
The Command key (⌘), used in most Mac keyboard shortcuts. The key functions as a Meta key in Unix-like environments, and is semantically equivalent to the Windows key in Windows environments, although in common applications it performs the same function as the Windows Control key. Compared to their equivalents of the standard IBM PC keyboard layout the Command key and the Option key are located in reverse order.
The "open" (hollow) & separate "closed" (solid) Apple logo keys on the Apple II series, served functions similar to that of the Command key. The open-Apple key was combined with the Command key on Apple Desktop Bus keyboards (which were used on both the Apple IIgs and several years of Macintosh models) where it remained after the Apple II line was discontinued.
The Option key (⌥), for entering diacritics and other special characters. Like the Shift and Control keys, the Option key serves as a modifier for the Command key shortcuts, as well as being used to type many special characters. It serves......