DataGlyphs/Microglyphs are a robust and unobtrusive method of embedding computer-readable data on surfaces using tiny 45-degree diagonal lines representing binary 0 or 1. The article details how data is encoded, data density compared to PDF417 barcodes, factors affecting density (resolution, error correction, data compression, overhead), and licensing information.
The author explores the potential of representing Lisp programs as hypertexts using NoteCards, a hypermedia environment from Medley Interlisp, by creating a Sysrama function named CODECARDS to generate hypertext representations.
The article details a digital archive of source code and documents from Xerox PARC, spanning from the 1980s to 1994. It describes the archive's contents, organization, and the tools/languages/projects represented (Cedar/Mesa, Interlisp, Alto systems, graphics, printing, AI, etc.). It also explains how the files were processed for viewing (HTML, PDF, octal dumps) and provides information about file naming conventions and archive structure.
