Paolo Amoroso • 9/1/2025

Exploring Interlisp-10 and TWENEX

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The article details the author's hands-on experience with Interlisp-10, a character-based Lisp development environment from the 1970s, running on the TWENEX (TOPS-20) operating system via a public SDF PDP-10. It focuses on the TTY editor, a command-line structure editor for Lisp code, comparing it to modern tools and discussing its historical context, commands, and practical use for batch editing of s-expressions.

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#lisp #legacy systems #Interlisp 10
Exploring Interlisp-10 and TWENEX

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