Hi Folks,
I am the assigned DNSDIR reviewer for this draft.
Thank you for a well-written draft that appears to be very comprehensive

Some very minor comments that are non-blocking.

Section 1:
Personal Preference: The intro section seems to be a little unfocused, if you take another pass at the document I would suggest tightening it down to the doc's goal more succinctly.

Section 2:  Context for resolving a name: The global DNS root zone distributed by PTI. - This line seems to be very light compared to others

Suggestion: This kind of document would work well in a more dynamic format similar to some of the work being done on updating the IETF Tao, something to potentially consider post-publishing.