CUA typically refers to Common User Access. It's a standard for user interface design intended to make applications more consistent and easier to learn. Developed by IBM in the late 1980s, CUA aimed to provide a common look and feel across different operating systems and applications, particularly within the IBM mainframe environment (S/370) and OS/2. While the specific CUA standard isn't as strictly adhered to today, its principles of consistency and usability have greatly influenced modern UI design. Features such as standard menu layouts (File, Edit, View, etc.) and common keyboard shortcuts (Ctrl+C for copy, Ctrl+V for paste) are direct descendants of CUA's influence.
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