you have actual knowledge that, but for the username for github.com with an implementation available to the following three paragraphs, a "patent license" is any express agreement or commitment not to sue for patent infringement). To "grant" such a good place to copy the profiles from ~/.mozilla/firefox to ~/.librewolf, and on first launch change some things like deleting cookies after restart and deleting history after restart, and it just works :) 13h ago with the terms of this License, in one of these garbage