+These options turn off the SSLv3, TLSv1, TLSv1.1 or TLSv1.2 protocol
+versions with TLS or the DTLSv1, DTLSv1.2 versions with DTLS,
+respectively.
+As of OpenSSL 1.1.0, these options are deprecated, use
+L<SSL_CTX_set_min_proto_version(3)> and
+L<SSL_CTX_set_max_proto_version(3)> instead.