Appendix A. Making Mandatory Items Optional
A.1. Algorithm Identification
A.2. Countersignature Without Headers
It's an oxymoron to make mandatory items optional. Therefore, this appendix should be deleted on that basis. It's also devoid of content, and so not useful.
Appendix A at https://tools.ietf.org/html/draft-ietf-cose-msg-10#appendix-A contains only this text:
Appendix A. Making Mandatory Items Optional A.1. Algorithm Identification A.2. Countersignature Without Headers
It's an oxymoron to make mandatory items optional. Therefore, this appendix should be deleted on that basis. It's also devoid of content, and so not useful.