A series of messages from the comparison algorithm. Errors indicate that solutions cannot be interoperable across both implementation guides (or that there are structural flaws in the definition of at least one).
[%messages%]The intersection of the 2 constraint statements. This is what resource authors (either client or server) would need to conform to produce content valid against both implementation guides.
[%subset%]The union of the 2 constraint statements. This is what resource authors (either client or server) would need to be able to handle to accept content valid against either implementation guides.
[%superset%]