How to split XAML Designer

Question

Can I split XAML Designer to one view XAML and one view Design？

Like this

But now can only see XAML or design. I want see both on same time in addition to the original split view， how to implement?

========================================================================= Append： maybe i did't describe it clear, i want is two subwindows to respectively show XAML and Desing，Plug-in can be？

Answer 1

To the right of the 'Design' and 'XAML' tabs there are buttons to toggle the split between these two views.