As mentioned above, piro_or is the developer of the popular extension this feature was tailor-made for. I imagine it is well-documented on their site because th

As mentioned above, piro_or is the developer of the popular extension this feature was tailor-made for. I imagine it is well-documented on their site because they were closely involved in the development. I see no reason not to presume the documentation hasn't been added to the wiki yet simply because the devs were working down to the wire to get it included in this release as many users have been clamoring for it. In fact, there is a fairly detailed blog post on Mozilla's site that suggests this is the case.[1] All the worst-case assumptions about Mozilla on this site are getting tiresome. 1. https://blog.mozilla.org/addons/2018/11/08/extensions-in-firefox-64/#cm https://blog.mozilla.org/addons/2018/11/08/extensions-in-fir...