1.   The protocol also applies its standards to rebel groups or other factions that are not represented by any government and so not party to it.

2.   The updated protocol applies to missiles of any range, which China has resisted.

3.   Delegates reported progress in how the protocol would apply to commodity shipments, and which types of genetically modified products would be exempt from the rules.

4.   It is not a state funeral, so the usual protocol does not apply.

5.   Such a protocol would presumably apply only to a meeting between independent heads of state.