Yes, that is right.
Regarding the documentations - for the future we are planning to include additional articles about RadExpressionEditor based on the questions that we receive from clients.
If you have any other questions, please do not hesitate to contact us.
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!