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      1 Long: tlsv1.3
      2 Help: Use TLSv1.3
      3 Protocols: TLS
      4 Added: 7.52.0
      5 ---
      6 Forces curl to use TLS version 1.3 when connecting to a remote TLS server.
      7 
      8 Note that TLS 1.3 is only supported by a subset of TLS backends. At the time
      9 of this writing, they are BoringSSL, NSS, and Secure Transport (on iOS 11 or
     10 later, and macOS 10.13 or later).
     11