The CTP does not include Wiki module. We shipped the CTP only with some of the basic modules. We are going to extend the Content
in Sitefinity 4.0 and we are considering possible implementation for the Wiki. For managing the content, most probably we will use RadEditor control which supports Cut/Copy/Paste . If the content has <img tag it will be added to the Content area of the RadEditor control and your image will be shown.
All the best,
the Telerik team
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