Hey HN, I’m Alex. The lead engineer working on this. The main technical challenges revolved around treating documents as structured, interlinked data rather than static text, requiring a real-time system that preserves hierarchy, references, and dynamic variables across files. Doing that while keeping the editing experience fast, collaborative, and predictable demanded custom data models, syncing logic, and rendering pipelines that traditional editors don’t have. We’re very much looking to improve so all feedback is welcome!