Firefox has a variety of settings that you can access from the Options menu. But with Mozilla's browser you can do much more. Firefox has a built-in configuration editor that you can access by typing about: config into the address field. This gives you access to hundreds of different features and settings that you can enable, disable, or otherwise customize.
But how do you know which configuration settings you can and should touch? Let's look at how to access the editor and review some specific settings that you might want to tweak.