--nocron Only valid for '--install' command, which means: do not install the default cron job. In this case, the certs will not be renewed automatically.
--ecc Specifies to use the ECC cert. Valid for '--installcert', '--renew', '--revoke', '--toPkcs' and '--createCSR'
--csr Specifies the input csr.
--pre-hook Command to be run before obtaining any certificates.
--post-hook Command to be run after attempting to obtain/renew certificates. No matter the obain/renew is success or failed.
--renew-hook Command to be run once for each successfully renewed certificate.