RadRichTextBox is a component designed to add rich-text capabilities to Line Of Business applications in Silverlight and WPF. RadRichTextBox uses its own internal format to process rich text and features like Html, Docx import/export are introduces for better compatibility of these applications with the most popular document processing applications like MS Word. In other words our component has as little in common with MS Word, as we comply with the same format specifications, however all Html and Docs processing is done entirely by RadRichTextBox and requires no additional utilities.
What you should mind is that RadRichTextBox does not fully support either format, which is not actually its goal. Rather, you should test if the compatibility of our product with MS Word is enough for your scenario. Unfortunately the Html and Office Open Xml (DocX) format specifications are so wide that we are not able to list all differences in how RadRichTextBox and MS Word are handling them. Thus the best approach is if you notice specific problems, you send us the documents causing them and see if we can help.
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