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Will be available in Q1 2016 Release.

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Fixed in LIB Version 2015.3.1130.
Note that the MinimizeButtonStyle used in the OutlookBar control is now renamed to OutlookBarMinimizeButtonStyle.

When defaultThemeVersion is missing from the file, some styles are not shown when the document is opened in MS Excel.
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If the value from the source contains new lines, they should be inserted in the resulting documents as new paragraphs.
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Workaround:
Copy the default styles after the Mail Merge

RadFlowDocument merged = sourceDocument.MailMerge(mailMergeSource);
merged.DefaultStyle.ParagraphProperties.CopyPropertiesFrom(sourceDocument.DefaultStyle.ParagraphProperties);
merged.DefaultStyle.CharacterProperties.CopyPropertiesFrom(sourceDocument.DefaultStyle.CharacterProperties);
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The AltChunk element is responsible for embedding external content into documents.
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The fix will be available in our next LIB release (v. 2016.01.125).

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Create control for fast editing/visualization of source code.

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