\dd Force use of SSH protocol version 2.
+\dt \cw{-4}, \cw{-6}
+
+\dd Force use of IPv4 or IPv6 for network connections.
+
\dt \cw{-C}
\dd Enable SSH compression.
-\dt \cw{-i} \e{path}
+\dt \cw{-i} \e{keyfile}
+
+\dd Private key file for user authentication. For SSH-2 keys, this key
+file must be in PuTTY's PPK format, not OpenSSH's format or anyone
+else's.
+
+\lcont{ If you are using an authentication agent, you can also specify
+a \e{public} key here (in RFC 4716 or OpenSSH format), to identify
+which of the agent's keys to use. }
+
+\dt \cw{\-noagent}
+
+\dd Don't try to use an authentication agent.
+
+\dt \cw{\-agent}
-\dd Private key file for user authentication.
+\dd Allow use of an authentication agent. (This option is only necessary
+to override a setting in a saved session.)
\dt \cw{\-hostkey} \e{key}