chrome://browser/content/browser.xul – Opens another Firefox inside a tab in the the existing Firefox window.

chrome://browser/content/preferences/preferences.xul - Opens the Options dialog box inside the Firefox tab.

chrome://browser/content/bookmarks/bookmarksPanel.xul - Opens the “Bookmarks Manager” inside a tab in the Firefox window.

chrome://browser/content/history/history-panel.xul – Opens the History Panel in the Firefox tab.

chrome://mozapps/content/extensions/extensions.xul?type=extensions - Opens the Extensions window in the current tab.

chrome://browser/content/preferences/cookies.xul – Opens the “cookies window” inside a tab in the Firefox window.

chrome://browser/content/preferences/sanitize.xul – Opens the “Clear Private Data” window inside the current tab.

chrome://browser/content/aboutDialog.xul – Opens the “About Firefox” Dialog box inside the tab.

chrome://browser/content/credits.xhtml – Opens a scrolling list of firefox contributors. The one’s who we must thank for creating Firefox

chrome://global/content/alerts/alert.xul - Dancing Firefox.