# Core File Kit

- [Introduction to Core File Kit](../file-management/core-file-kit-intro.md)
- Application Files
  - [Application File Overview](../file-management/app-file-overview.md)
  - [Application Sandbox](../file-management/app-sandbox-directory.md)
  - Application File Access and Management
    - [Accessing Application Files](../file-management/app-file-access.md)
    - [Uploading and Downloading Application Files](../file-management/app-file-upload-download.md).
    - [Obtaining Application and File System Space Statistics](../file-management/app-fs-space-statistics.md)
  - [Pushing Files to an Application Sandbox Directory](../file-management/send-file-to-app-sandbox.md)
  - [Sharing an Application File](../file-management/share-app-file.md)
  - Application Data Backup and Restore
    - [Application Data Backup and Restore Overview](../file-management/app-file-backup-overview.md)
    - [Accessing Backup and Restore](../file-management/app-file-backup-extension.md)
    - [Triggering Backup and Restore (for System Applications Only)](../file-management/app-file-backup.md)
  - [Authorizing Access to Application Files](../file-management/app-file-authorization.md)
- User Files
  - [User File Overview](../file-management/user-file-overview.md)
  - [User File URI](../file-management/user-file-uri-intro.md)
  - Selecting and Saving User Files (FilePicker)
    - [Selecting User Files](../file-management/select-user-file.md)
    - [Saving User Files](../file-management/save-user-file.md)
  - [Developing a File Manager Application (for System Applications Only)](../file-management/dev-user-file-manager.md)
  - [Managing External Storage Devices (for System Applications Only)](../file-management/manage-external-storage.md)
- Distributed file system
  - [Distributed File System Overview](../file-management/distributed-fs-overview.md)
  - [Setting the Security Level of a Distributed File](../file-management/set-security-label.md)
  - [Accessing Files Across Devices](../file-management/file-access-across-devices.md)
  - [Cross-Device File Copy](../file-management/file-copy-across-devices.md)