See my profile page. Just added links to the Post Enhancer and the Tree Viewer xpi files that TangoLimaSierra sent me.
I already had the post enhancer and just added tree viewer but I see no difference.
Cynwoody’s description says; “FRTV provides a button and a keyboard shortcut to toggle back and forth between the flat view and the tree view.”
I didn’t get a button on Waterfox and Cynwoody’s description doesn’t mention what the keyboard shortcut is.
After giving Tree Viewer permission to access my data for FR, it looks like it did add the Quote feature(s). All hitting quote does is highlight the post above with a yellow background.