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ViewAbout
Enables access to various about: dialogs from the View menu....
thunderbird extension thunderbird about dialog about buildconfig about
aboutsystem
Displays KDE4 system information...
About Add-ons
Adds an About button to extensions, themes, and languages in the Add-ons list...
AboutConfig
AboutConfig provides an about:config page for Thunderbird....
AboutPlug
AboutPlug is a simple extension adds menuitem "About Plug-ins" to menu Help....
about:accessibilityenabled
about:accessibilityenabled provides an about page, to show whether accessibility API support is enabled....
thunderbird extension Accessibility about enabled accessibility about accessibility
MR Tech About:About
Adds the following "about:" options to the Help menu...
thunderbird extension thunderbird about dialog about MR Tech
About Menu
About Menu is an extension which provides easy access to the various About menus in Firefox....
about:kittens
Baby cats and kittens in the about box......