"The main window of Firefox software where you will be able to enter the URL address of the webpage that you want to view."

"Tools tab window of Firefox where you can select from Web Search, Add-ons, Downloads, Error Console, Page Info options."

"Main tab of Options window is where you will be able to adjust and modify the homepage URL and downloads settings."

"Security tab of Options window is where you will be able to adjust and modify the security settings."

"Advanced tab of Options window is where you will be able to adjust and modify the Accessibility or Browsing settings."