I think this is just oversight of part of Microsoft.
I found the path to the fragments by selecting Tools -> Code Snippets Manager, the selected HTML as the language, and choosing ifcs4. Path to fragment (for VS 2013):
C: \ Program Files (x86) \ Microsoft ASP.NET \ ASP.NET MVC 4 \ Visual Studio 2013 \ Snippets \ HTML \ 1033 \ ASP.NET MVC 4 \ ifcs.snippet
I updated the file using the Razor-style if it worked perfectly even without reloading the project.
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