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How do I get T-Bird to "Single Space" again?

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  • 最近回覆由 Toad-Hall

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Is there a way to get, and keep T-Bird in the 'Single Space' mode? If so, how is it done?

Is there a way to get, and keep T-Bird in the 'Single Space' mode? If so, how is it done?

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Duplicate question. Please refrain from asking duplicate question repeatedly and keep all correspondence in one question. https://support.mozilla.org/en-US/questions/1332687