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The markup should be easy to describe and explain. This requires it to be EasyToLearn, but also places some additional requirements.
The concepts used should not be new, but also they shoudn't be overly advanced (e.g. using CSS within RawText to style elements seems a little too complicated).
It should be possible to describe the Creole syntax in Creole itself (the } } } issue makes it hard now).
All elements should be visible (even when printed), both in RawText and on RenderedPage, so that they can be demonstrated to the audience.
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