Clarify where table 4 applies

[kmiller68]

Reading the spec it's very unclear to me where table 4 applies. In fact I find it actively misleading. In sections 18-26 + Annex B.2 table 4 no longer applies since it is overridden by the last couple paragraphs of Section 17. In fact, I can't find any place in the spec where it applies. Although, I may have missed something.

Does it make sense to make an editorial change and move the last couple paragraphs of Section 17 to where table 4 is now (and delete table 4 assuming it doesn't apply anywhere)?

[littledan]

Isn't it used by ToPropertyDescriptor?

If this is the only place where it's used, I agree that it would be fine to move that logic into ToPropertyDescriptor, and instead say where Table 4 appears, "either this set of fields must exist, or that set".

[littledan]

Isn't it used by ToPropertyDescriptor?

If this is the only place where it's used, I agree that it would be fine to move that logic into ToPropertyDescriptor, and instead say where Table 4 appears, "either this set of fields must exist, or that set".