What is Dock?
A dock is a user interface feature of a number of operating systems that typically provides a user with a way of launching and switching between applications. Early implementations of the dock concept include the icon bar in Acorn Computers's Arthur operating system and the dock in the NEXTSTEP operating system. Other dock implementation are included in Apple's Newton OS and iPhone OS and a variety of third party applications that add dock features to operating systems such as Microsoft Windows and Linux, though Mac OS X's has been the most commercially successful.
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