...
6) Question: Is the structure of the codebook important to be captured (like chapters and sections and their ordering)? that would be a separate work to do.
Question: ICPSR has used:
...
but it cannot be found in FieldLevelDoc? Answer: Has moved in DDI 3.2.
7) Wendy helped with defining GroupObjects that will have Relationships. All other elements in the list are considered to be Properties.