Thanks for all the information. I have explored the Acrobat side of things. I just checked the document structure option in Acrobat, and it was actually already selected. I also checked the Tag order in Acrobat, and it's perfect. Yet when I view the reading order, it's all wrong. I'm not sure which screen reader people will be using; I'm trying to make the PDF as 508 compliant as possible. Before I defined all the "panels" in InDesign (Articles, Tags, Structure, etc.), Acrobat was determining the reading order in the exact same incorrect way. It's as if nothing I do in InDesign is affecting how Acrobat determines the reading order. Interestingly, when I look at the Articles panel in Acrobat (not InDesign), there is nothing, it's empty. The structure looks correct in Acrobat. And, yes, I'm selecting "Tagged PDF" on the PDF export options. And I've selected "Use Articles to determine reading order." Let me track down the other discussions and I will post the links.
... View more