[B<-C>]
[B<-check>]
[B<-name arg>]
-[B<-list_curve>]
+[B<-list_curves>]
[B<-conv_form arg>]
[B<-param_enc arg>]
[B<-no_seed>]
=item B<-engine id>
-specifying an engine (by it's unique B<id> string) will cause B<req>
+specifying an engine (by its unique B<id> string) will cause B<ecparam>
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.