You can also customize this portion of the toolbar, such as moving it to the left edge of the window or not showing text descriptions with each icon.
您还可以自定义这一部分工具栏，如将它移到窗口的左边，或者不显示每个图标的文本说明。
2
If you save everything at this point and restart Firefox, you can drag the buttons onto your navigation toolbar if you right click on each of them and select Customize.
To customize the toolbars and menus of a perspective, right-click the main toolbar at the top and select customize perspective, then click the Commands TAB.