about:credits - The list of contributors to the Mozilla projects.about:customizing - Only available on Australis.Only in products based on Gecko 1.9 or later (Firefox 3, Thunderbird 3, SeaMonkey 2). about:crashes - List of Breakpad crash reports, with links and datestamps.(Also accessible in Thunderbird by means of the 'Config Editor' button in the 'Advanced' Preferences). about:config - GUI for modifying user preferences.Implemented starting with Firefox 13 ( bug 702300) about:compartments shows a list of live JavaScript compartments.

about:cache-entry - Shows information about a cache entry.about:cache?device=disk - Lists disk cache entries.about:cache?device=memory - Lists memory cache entries.about:cache - Displays cache statistics and disk cache directory location.about:buildconfig - Reveals details about your Mozilla build options.App Manager, a tool to help users build and install web apps on compatible devices (i.e. about:app-manager - new on Firefox 26.about:addons - The 'new' addons manager, in trunk builds dated or later.about:accounts - Firefox Sync account.about:about - Lists all these about: URLs ( Mozilla Suite/SeaMonkey or Firefox 4 and newer only).about: - The same page as 'Help -> About' (except that, on some applications, Help → About is a much smaller popup).About: URLs that are listed in about:about page.

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