How do I remove this? If the config change doesn't remove it, it can be done with CSS: #alltabs-button { display:none !important; } If you're not familiar with CSS, see https://www.reddit.com/r/FirefoxCSS/wiki/index/tutorials/ and post ove…

・「route」コマンドでWindows OSのルーティングテーブルを操作する：Tech TIPS - ＠IT