NTFS reparse point

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An NTFS reparse point (JP) is a type of NTFS file system object. It is available with the NTFS v3.0 found in Windows 2000 or later versions. Reparse points provide a way to extend the NTFS filesystem by adding extra information to the directory entry, so a file system filter can interpret how the OS will treat the data, allowing to create Junction Points, Symbolic Links and is a key feature to Windows 2000's Hierarchical Storage System. They also can act as hard links, but aren't limited to point to files on the same volume: they can point to folders on any local volume.