--clearsign
              Make a cleartext signature.  The content in a cleartext signature is readable without any special software. OpenPGP software is only needed
              to verify the signature.  cleartext signatures may modify end-of-line whitespace for platform independence and are not intended to  be  re‐
              versible.  The signing key is chosen by default or can be set explicitly using the --local-user and --default-key options.