It'll withstand KDP, the dreaded Smashwords Meatgrinder, and even MobiPocket Creator. Amazing, isn't it? Well, have a seat and I will show you how to do it!
A Grindable, Clickable eBook Table of Contents
There’s been a lot of confusion and debate over how to create a table
of contents in an eBook that will survive KDP and Smashwords
conversions. Some say you have to do it all manually, and some say you
can use MS Word automation. Lynne Cantwell wrote a post about the manual method, and Dick Waters just recently wrote about a more sophisticated style.
You can use this table of contents method on an existing document or a new document, that’s not a gating factor. I usually do it in an “assembly line” fashion, as that’s faster, but I’m going to do it one “chapter” at a time so the sequence is clear.
Keep reading at http://www.indiesunlimited.com/2013/12/10/a-grindable-clickable-ebook-table-of-contents/