Henrik is absolutely right - thanks for providing such an accurate answer, Henrik.
What I can add is that images can be inserted through a dialog, similar to the way images are embedded in MS Word. They can also be included in code, using ImageInline or an InlineUIContainer containing an Image. If you use ImageInline with an absolute URI for UriSource, you have to make sure that the URI is for a page with permissive cross-domain policy.
Copy/Paste of rich text and images inside RadRichTextBox is supported through an internal clipboard.
If you encounter any difficulties with your scenario, you can get back to us with some details on the problem.
the Telerik team
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