For @ciphers@ see OpenSSL "ciphers":http://www.openssl.org/docs/apps/ciphers.html string
For @ciphers@ see OpenSSL "ciphers":https://www.openssl.org/docs/manmaster/man1/ciphers.html string
For @options@ see "options":https://www.openssl.org/docs/ssl/SSL_CTX_set_options.html. Explicitly specify the reverse flag by toggling the "NO_" prefix to override defaults.
For @options@ see "options":https://www.openssl.org/docs/manmaster/man3/SSL_CTX_set_options.html. Explicitly specify the reverse flag by toggling the "NO_" prefix to override defaults.