Codex

codex Palauenc05, CC BY-SA 4.0

Book with handwritten content

The codex was the historical ancestor format of the modern book. Technically, the vast majority of modern books use the codex format, of a stack of pages bound at one edge. However, the term codex is now reserved for older manuscript books, which mostly used sheets of vellum, parchment, or papyrus, rather than paper.

OpenAI plans $1.5B PE venture

OpenAI plans $1.5B PE venture OpenAI negotiates a $1.5 billion private equity partnership while briefing government agencies on its latest cybersecurity AI tools.