-arguments specify a certificate and key file when required. There is one
-additional option, -tls-on-connect, that causes the client to initiate TLS
-negotiation immediately on connection.
+arguments specify a certificate and key file when required for the connection.
+There are two additional options: -tls-on-connect, that causes the client to
+initiate TLS negociation immediately on connection; -ocsp that causes the TLS
+negotiation to include a certificate-status request. The latter takes a
+filename argument, the CA info for verifying the stapled response.