# File Management

- Core File Kit
  - [Introduction to Core File Kit](core-file-kit-intro.md)
  - Application Files
    - [Application File Overview](app-file-overview.md)
    - [Application Sandbox](app-sandbox-directory.md)
    - Application File Access and Management
      - [Accessing Application Files](app-file-access.md)
      - [Uploading and Downloading Application Files](app-file-upload-download.md)
      - [Obtaining Application and File System Space Statistics](app-fs-space-statistics.md)
    - [Pushing Files to an Application Sandbox Directory](send-file-to-app-sandbox.md)
    - [Sharing an Application File](share-app-file.md)
    - Application Data Backup and Restore
      - [Application Data Backup and Restore Overview](app-file-backup-overview.md)
      - [Accessing Backup and Restore](app-file-backup-extension.md)
      - [Triggering Backup and Restore (for System Applications Only)](app-file-backup.md)
    - [Authorizing Access to Application Files](app-file-authorization.md)
  - User Files
    - [User File Overview](user-file-overview.md)
    - [User File URI](user-file-uri-intro.md)
    - Selecting and Saving User Files (FilePicker)
      - [Selecting User Files](select-user-file.md)
      - [Saving User Files](save-user-file.md)
    - [Developing a FileManager Application (for System Applications Only)](dev-user-file-manager.md)
    - [Managing External Storage Devices (for System Applications Only)](manage-external-storage.md)
  - Distributed File System
    - [Distributed File System Overview](distributed-fs-overview.md)
    - [Setting the Security Level of a Distributed File](set-security-label.md)
    - [Accessing Files Across Devices](file-access-across-devices.md)
    - [Copying Files Across Devices](file-copy-across-devices.md)
- Media Library Kit
  - [Introduction to Media Library Kit](photoAccessHelper-overview.md)
  - [Before You Start](photoAccessHelper-preparation.md)
  - [Managing Media Assets](photoAccessHelper-resource-guidelines.md)
  - [Managing User Albums](photoAccessHelper-userAlbum-guidelines.md)
  - [Managing System Albums](photoAccessHelper-systemAlbum-guidelines.md)
  - [Observing Media Assets](photoAccessHelper-notify-guidelines.md)