MWE showing one of my indexing problems

[Steve Litt]

Attached please find mwe.lyx and mwe.pdf, which was created by mwe.lyx.
This document is standard book class, sized 6 inches high by 4 inches
wide to fit on reasonably sized mobile devices. The symptom is that
index item "Incremental/Differential Learning" spans about 35 pages,
but there's no index begin tag on the first of those pages, or anywhere
near it. You can read the rest of the symptom description as chapter 1
of the actual document.

I could have refined it further, but after 3 days I'm so punch drunk
I was afraid I'd make the symptom vanish and have to start all over
again, so if some of you could take a look at it, I'd be very grateful.

Thanks,

SteveT

Steve Litt 
Spring 2021 featured book: Troubleshooting Techniques of the Successful Technologist
http://www.troubleshooters.com/techniques
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