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On pages which do not have a Table of Contents, but should do, create one! (I actually use this as a bookmarklet, so I can load it onto the current page only when I want it.)
< Σχολιασμός για τον κώδικα Table of Contents Everywhere
Thanks!
An alternative: AutoTOC
For reference, there is also AutoTOC which provides a similar feature, but via a dropdown menu. It uses far fewer lines of code!