Google Wave: The Protocol

• Document: items + positions
• Blip: a series of items
• Operations: skip, insert and delete content
• Composition: merging operations across versions of a document
• Conversation: blips + threads

conversation
    blip id=foo
    thread
        blip neep
        blip nope
        thread
            blip wop
    blip id=bar

• Blip document: elements + annotations

body
    line
    Some text goes here and it has a style and links
    image

Annotations mark object offsets (each character is also an object) and spans where rich text or hyperlinks appear.