from toolbar button

基本解释

If the Servers panel isn't displayed (it should be by default) click the Servers button from the top toolbar.
如果服务器面板不显示（应默认情况下）按一下按钮，服务器从顶部的工具栏。
Access your last search results from a toolbar button without having to go back to the Google search results page.
查阅支持相关的章节以了解从何处获取有关该附加组件的帮助。
versioncheck.addons.mozilla.org
You can observe and change the state of the debug daemon from the daemon button in the Debug view toolbar in the UI.
您可以从 UI 中 Debug 视图工具栏中的 daemon 按钮来观察并更改 daemon 的状态。