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-This library is an alternative testing helper for the [IFileSystem interfaces from System.IO.Abstractions](https://github.com/TestableIO/System.IO.Abstractions).
-These interfaces allow abstracting away all I/O-related functionality from the `System.IO` namespace.  
+This library is a feature complete testing helper for the [IFileSystem abstractions for I/O-related functionality](https://github.com/TestableIO/System.IO.Abstractions) from the `System.IO` namespace. It uses an in-memory file system that behaves exactly like the real file system and can be used in unit tests for dependency injection.  
 The testing helper also supports advanced scenarios like
 - [Multiple drives with limited size](Examples/DriveManagement/README.md)
 - [`FileSystemWatcher`](Examples/FileSystemWatcher/README.md) and