Review for Header Tools Improved by doclucas
Rated 4 out of 5 stars
Dillinger, amazing work on one of the best Add-ons.
Temporarily dropping 1 star as it does not yet work on TB 78.4 (which I love, a huge improvement IMHO over older TBs)
Hopefully a new version comes out soon.
To create your own collections, you must have a Mozilla Add-ons account.