The InlineUIContainer element could wrap any type of UIElement objects, but it has some limitations. This type of containers cannot be moved to other position in the document, they are not copyable, editable nor resizable.
Due to the fact that UIElement is a specific for WPF concept, the InlineUIContainers are partially exported to some formats while other do not support them at all. More information on this matter you could find in the InlineUIContiner article
I hope this makes things clear.
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