+=item B<-sigalgs sigalglist>
+
+Specifies the list of signature algorithms that are sent by the client.
+The server selects one entry in the list based on its preferences.
+For example strings, see L<SSL_CTX_set1_sigalgs(3)>
+
+=item B<-curves curvelist>
+
+Specifies the list of supported curves to be sent by the client. The curve is
+is ultimately selected by the server. For a list of all curves, use:
+
+ $ openssl ecparam -list_curves
+