C#

In addition to allowing reparse points to implement many types of custom capabilities, Microsoft itself uses them to implement several features within Windows 2000 itself, including the following:

Symbolic Links: Symbolic linking allows you to create a pointer from one area of the directory structure to the actual location of the file elsewhere in the structure. NTFS does not implement "true" symbolic file linking as exists within UNIX file systems, but the functionality can be simulated by using reparse points. In essence, a symbolic link is a reparse point that redirect access from one file to another file.
Junction Points: A junction point is similar to a symbolic link, but instead of redirecting access from one file to another, it redirects access from one directory to another.
Volume Mount Points: A volume mount point is like a symbolic link or junction point, but taken to the next level: it is used to create dynamic access to entire disk volumes. For example, you can create volume mount points for removable hard disks or other storage media, or even use this feature to allow several different partitions (C:, D:, E: and so on) to appear to the user as if they were all in one logical volume. Windows 2000 can use this capability to break the traditional limit of 26 drive letters--using volume mount points, you can access volumes without the need for a drive letter for the volume. This is useful for large CD-ROM servers that would otherwise require a separate letter for each disk (and would also require the user to keep track of all these drive letters!)
Remote Storage Server (RSS): This feature of Windows 2000 uses a set of rules to determine when to move infrequently used files on an NTFS volume to archive storage (such as CD-RW or tape). When it moves a file to "offline" or "near offline" storage in this manner, RSS leaves behind reparse points that contain the instructions necessary to access the archived files, if they are needed in the future.