For some purposes, you may use the root element corresponding to the third-party package in app.xaml when you use the third-party package. As you can see from this document , you could add the xaml:XamlApplication
root element to the app.xaml file.
what the <views root element is doing
The role of the view here is to map to custom classes and assemblies. For more mapping content of wpf, you could refer here.
I'm trying to understand what this line is doing versus the original line of <Application.
For the question of <views:MvxApplication>, it is a third-party product MVVMCross, you can ask questions in the forum mentioned here.
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