Aha! I can spend an hour clicking around and searching the help with no luck, but I'm pretty much guaranteed to find my own answer about ten minutes after I post. For future reference, if you select the table and go to the Object panel, you can pull down Right-to-Left Rows from the dropdown.

I have done a bit of Livecycle Designer localization work here and there, but this project is much more challenging than others I've tried, and it has me stumped. I've been asked to rebuild an English PDF form as an Arabic form, and have been given a bilingual table in Word with the translations tha...