ec: Document that -conv_form and -no_public are not supported with engine
@@ -189,6 +189,9 @@ L<openssl-rsa(1)>
The B<-engine> option was deprecated in OpenSSL 3.0.
+The B<-conv_form> and B<-no_public> options are no longer supported
+with keys loaded from an engine in OpenSSL 3.0.
+
=head1 COPYRIGHT
Copyright 2003-2020 The OpenSSL Project Authors. All Rights Reserved.
