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completedefaultindex New in Thunderbird 3 Requires SeaMonkey 2.0
Type: boolean
If true, the best match value will be filled into the textbox as the user types. If set to false or omitted, the value must be selected from the list.

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 Contributors to this page: Sheppy, trevorh, Neil, Marsf, Dria
 Last updated by: Sheppy,