Version history — Compatibility¶
Current edition: v3 · 2026-09-28 · prime abstraction
Editions¶
| Version | Date | Change | What changed |
|---|---|---|---|
| v3 | 2026-09-28 | The footnote for Sommerville, Software Engineering, 9th ed. 2010 now links to the Open Library record for that book, the same link used by the work's other citations. The text is otherwise unchanged. | prose — detailed body (prose edited) |
| v2 | 2026-08-30 | Collapsed 1 footnote key that was defined more than once in this file; the renderer and the reference extractor both keep only the last definition, so the earlier copies were unreachable. 1 reference on this page now carries the link that was sitting shadowed in the file. | prose — detailed body (prose edited) |
| v1 | 2026-08-24 | First published edition. | first published edition |
Editions are cut at publish time from a content hash of the entity's canonical source, so a version changes only when the content actually changed. Full canonical content for every edition, and the exact per-part diffs between them, are in the downloadable editions archive (editions_archive.jsonl); the current-state index is versions.jsonl.