the.com/codex

means A bound manuscript volume — the ancestor format of the modern book, made of stacked, stitched pages rather than a single scroll.

from From Latin 'codex' (also spelled 'caudex'), meaning the trunk of a tree or a block of wood — because early wooden writing tablets, strapped together at one edge, were made from thin wood slabs. The word later extended to any bound set of pages once wax tablets gave way to parchment, marking the historical shift from scrolls to the book as we know it. OpenAI's borrowing just adds a sly wink: a 'codex' for code.