How to customize the Gnome Classic panel of Ubuntu 12.04

We all know how to customize the Gnome Classic panel of Ubuntu 12.04. Ubuntu 12.04, as an LTS, will take into account the usage habits of various users. Its Gnome classic mode will continue with the experience of Ubuntu 10.04. If you do not know how to install Gnome Classic, run it on the terminal: log out and select Gnome Classic upon logon. After you log on to www.2cto.com, you can see the classic interface of Ubuntu 10.04: but when you are using it, you may right-click the Panel and customize it according to the original operation habits, but here, you will find that the right-click button does not respond. Www.2cto.com at this time, you press the alt key, win + alt or win, and then right-click the Panel to try, you will find again: All panel widgets are the same as Ubuntu 10.04: then you can start customization !! This article is from the LUPA open-source community.