The functionality you point out in MS Word is related to COM technology, which is supported in Silverlight only in very limited scenarios. We will discuss with our development team whether this feature can be added to our to-do list, however currently there are lots of other features with higher priority that we have already planned, thus I am not able to specify when eventually this feature will be introduced.
Let us know if you have other suggestions.
All the best,
the Telerik team
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