Rated 5 out of 5 stars
Brilliant addon! I don't see why mozilla didn't include these descriptions in the first place, afterall, they made a site ref. Thank you for the time saved!
Mozilla developers wrote the source comments this extension shows, but not the online reference. MozillaZine is an community supported site, not the official Mozilla support site. Though not Mozilla run, it is often recommended and is currently the best source of information on things of a technical level between what's on Mozilla Support (SUMO) and the Mozilla Developer Network (MDN).