Codex: Introducing a familiar rich-text editing experience

This tweet is from a video of an early demo of **Codex**, a rich-text editor for software documentation that was later renamed to **Notion** — the all-in-one workspace / note-taking app now widely used by tech teams and individuals. The video shows how Notion's block-based editing (drag-and-drop, markdown shortcuts, nested pages) worked from the very start. The account @khudonogov likely belongs to an early Notion employee or beta user. For context: in 2015–2016, most collaborative docs were still linear (Google Docs, Word); Notion introduced a modular "blocks" approach that became the standard for modern productivity tools (e.g., Coda, Anytype, Obsidian). This video is a historical artifact of that shift.