I have used the clr-namespace token to map a xaml namespace to a clr namespace as in
xamlns:local = "clr-namespace:mycompany.myproject"
In the above example, the local is mapped to mycompany.myproject.
I have seen the use of the token using in some code.
xamlns:local = "using:mycompany.myproject"
Is there any difference in behavior when using the token using compared to clr-namespace?