Some of his inventions from that time, including an object-oriented programming language called Smalltalk, went into Croquet.

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The glue that melds Applixware Office's features together into coherent applications is an object-oriented macro programming language called ELF (Extension Language Facility).

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Like fixing any jumble, software gets organized by putting like things in boxes--a process called "abstraction"--and it flourished in the coming years through techniques like object-oriented programming, which shapes the Internet's Java language.

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