Larry Tesler, Computer Scientist Who Created Cut, Copy, and Paste, Dies At 74 (gizmodo.com) 66
Xerox PARC is also well known for not capitalizing on the groundbreaking research it did in terms of personal computing, so in 1980 Tesler transitioned to Apple Computer where he worked until 1997. Over the years he held countless positions at the company including Vice President of AppleNet (Apple's in-house local area networking system that was eventually canceled), and even served as Apple's Chief Scientist, a position that at one time was held by Steve Wozniak, before eventually leaving the company.
In addition to his contributions to some of Apple's most famous hardware, Tesler was also known for his efforts to make software and user interfaces more accessible. In addition to the now ubiquitous "cut," "copy," and "paste" terminologies, Tesler was also an advocate for an approach to UI design known as modeless computing, which is reflected in his personal website. In essence, it ensures that user actions remain consistent throughout an operating system's various functions and apps. When they've opened a word processor, for instance, users now just automatically assume that hitting any of the alphanumeric keys on their keyboard will result in that character showing up on-screen at the cursor's insertion point. But there was a time when word processors could be switched between multiple modes where typing on the keyboard would either add characters to a document or alternately allow functional commands to be entered.