gedit is one of the little gems that you can find in the default install of any of the major Linux distributions in which you have/can choose to install the Gnome desktop environment (Fedora, Mandriva, Mint, openSUSE, Ubuntu etc.)

You usually find it in your Applications menu, under the Accessories category, with the name of Text Editor.

As you can see in the screenshot the default layout and functionality is pretty basic.

We're going to change it to provide additional functionality needed for the daily usage as a web development editor.