The Navigation Pane doesn't read the Table of Contents (like the Table of Contents, the Navigation Pane reads the actual headings), so I doubt you'll be able to get the Table of Contents to appear there unless you assign the Heading 1 Style to the 'Table of Contents' heading paragraph - after first re-assigning all the other headings to a lower-level Heading Style. Even then, you won't get rid of the 'The top "button" (that) has a triangle and a horizonal bar'.

About the only way you'd get the Summary to appear at close to the Chapter level in the Navigation Pane (without deleting the 'Chapter' prefix for the Headings) would be to assign it the Style that appears next after your Chapter headings (e.g. Chapters = Heading 1; Summary = Heading 2). Again that would mean re-assigning the other headings to a lower-level Heading Style.

Regardless, this is all of little consequence for a document that is to be printed.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]