Provide real-time document editing capabilities similar to what Etherpad or WebODF does. This means that several people can edit the same document at the same time and all changes are visible by all participants in near real-time.
It should be possible to save different revisions of the document as well as assigning colours to text contributed by the different participants.
**Rationale:**
Tools like Etherpad and Google Docs have shown the value that real-time collaborative editing has brought to people. Being able to invite others to edit a document together is turning more and more into something people expect from their collaboration solution. The full value however is only realized when we support full ODF editing opposed to simple (rich) text editing.