[B<-no_tls1>]
[B<-bugs>]
[B<-cipher cipherlist>]
+[B<-starttls protocol>]
[B<-engine id>]
[B<-rand file(s)>]
supported cipher in the list sent by the client. See the B<ciphers>
command for more information.
+=item B<-starttls protocol>
+
+send the protocol-specific message(s) to switch to TLS for communication.
+B<protocol> is a keyword for the intended protocol. Currently, the only
+supported keyword is "smtp".
+
=item B<-engine id>
specifying an engine (by it's unique B<id> string) will cause B<s_client>
[B<-WWW>]
[B<-HTTP>]
[B<-engine id>]
+[B<-id_prefix arg>]
[B<-rand file(s)>]
=head1 DESCRIPTION
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
+=item B<-id_prefix arg>
+
+generate SSL/TLS session IDs prefixed by B<arg>. This is mostly useful
+for testing any SSL/TLS code (eg. proxies) that wish to deal with multiple
+servers, when each of which might be generating a unique range of session
+IDs (eg. with a certain prefix).
+
=item B<-rand file(s)>
a file or files containing random data used to seed the random number