[lewisjoe]

Google Docs actually uses a flat array representation of the whole document. Tables/lists and other structures are encoded using control-characters in the plain string. This makes index calculations for OT a bit easier.

How do I know? I work on Zoho Writer - a google docs alternative and we use the same technique :)

Glad to meet you. Huge fan of CKeditor's modular architecture of the editor. Making something with that level of customization and supporting realtime collaboration is not an easy feat at all!

What are your thoughts on CRDT generally? Will CKeditor ever look into adopting CRDTs in the future?