Reply To: proof
This is a nice puzzle, isn't it?
The spacing of the items means that you should format the expressions as displayed material (because the items are "set apart from the body of the text" in print). NC Sec.188a.
The sample you sent is on text page 359. Is this the first time you have encountered this layout? If you are sharing the project with other transcribers, you need to be consistent in treatment.