Reinstalling software will never affect your configuration. That is why you can reinstall the operating system without loosing any data or settings as long as you have /home on a separate filesystem. – Jo-Erlend SchinstadOct 23 '11 at 19:50
Go to where I added in the arrow. It will show file, edit, view,history,tools,help when you hovern over the black area there.
The edit holds preferences.