Annotations (com.google.wave.api.Annotation) is a key concept to understand, when you are developing robots, how should understand the content of a robot.

I have created a screencast, where I show how the annotations are changed because of the editing.

I have found the following types of annotations.

• user/d/key identifies that the user is on the blib and is in edit mode
• user/e/key identifies where the users cursor is only the from selection counts.
• user/r/key identifies the selection the user has created with start and end. The user will still have his curser at a place in the blip.
• style/fontWeight identify if the selection is bold
• style/textDecoration can be used to add line through
  
• style/color is the color of the selected text
  
• lang identifies the language of a region. There can be multiply different languages in a blip.

There are probably a number of different style markings, which you will have to find your self.

Key is probably a hash of the user address.

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