This is a string casting?

Hi, I see it everywhere but I can't find what´s mean the S before a constant string..... is a string casting? or what?

Code:

StreamWriter* pwriter = new StreamWriter(S"c:\\KBTest.txt");
pwriter->WriteLine(S"File created using StreamWriter class.");

On a hunch, I searched for "managed C++ string literal", and found: String Literal. So, if you are seeing it "everywhere", it means that you are using Microsoft's Managed extensions for C++.

Thanks, that is exactly what I need....... you are really a C++ witch