[Fitz Frobozz]

Thanks for the thoughtful replies! Sorry for any confusion. My motivation was based on a misunderstanding, which I figured out soon after the above.

I have been correcting errors in an ambitious ePub project and was struggling with the the Kindle Previewer GUI tool's shortcomings as far as making it clear which files it is actually referring to when multiple files of a given type happen to have the same title in the Table of Contents (in this case, "Notes"). My misguided thinking had been that I would try to use the manifest to help with that but I quickly realized that it wouldn't be of any help here. Instead, I wound up just temporarily renaming the TOC titles for the files in question, which resulted in me actually knowing which ones needed fixing when I ran the test again.