Debug\App.g.i.cs and Debug\App.g.cs are identical---what's going on here?

WPF projects in Visual Studio auto-generate Debug\App.g.i.cs and Debug\App.g.cs files. These files are identical. What's happening here? Does the i stand for "interactive" such that one copy is slapped around by Visual Studio (design-ti开发者_StackOverflow中文版me) and the other is used for running the "real" build?

I am also new to wpf... When going with basics i found one article on WPF

In that it was mentioned "i" as intellisence.. if u want go with this following link

http://stuff.seans.com/2008/07/11/hello-wpf-world-part-1/

I'm not sure what the i stands for, but the *.g.i.<language-extension> files are generated by the compiler as temporary files.