Long paths, short memory

I keep forgetting the way to get Windows to take long filepaths.  I.e. use a \\? prefix.

E.g. "\\?\C:\SomeLongFilePathThatGoesOn\Forever\And\Ever\And\Ever\And\Ever\...."

For details see  http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#maxpath