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Open config editor

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How do I open the config editor in V 91.0.1 Thunderbird? When I look for a method, I only find methods for earlier versions which don't seem applicable as the menu is not the same.

How do I open the config editor in V 91.0.1 Thunderbird? When I look for a method, I only find methods for earlier versions which don't seem applicable as the menu is not the same.

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Click the 3-bar menu icon, Preferences, and find Config. editor at the bottom of the General section. Or, type editor in the search box at the top of Preferences.