[B<-spksect section>]
[B<-noout>]
[B<-verify>]
-
+[B<-engine id>]
=head1 DESCRIPTION
verifies the digital signature on the supplied SPKAC.
+=item B<-engine id>
+
+specifying an engine (by its unique B<id> string) will cause B<spkac>
+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.
=back