I'd like the section headings in running text to link to their "line" in the Table of Contents so as to get "two-way" navigation, eg: a user looks in the Table of Contents for a section title, jumps there, reads a couple of lines, clicks on the section title again and gets taken to the section's entry in the Table of Contents once more.

Any ideas? :)

(Somewhat related to [this question](https://tex.stackexchange.com/questions/22574/getting-back-to-the-toc-by-clicking-on-headlines-in-the-text-how-to-do-it))