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tab. Change the state of the Ignore double spaces box.
Incidental remark: I assume you are a US citizen. What you call “business writing format” is taught there and dates back to the mechanical typewriter with fixed pitch characters. With modern document processors justifying text between margins and proportional fonts, it is a bad idea and disturbs the justification procedure. The right way to address this “feature” (in accordance with traditional typographic rules) would be to give a special status to the space following a strong punctuation.
Not all language-specific typographic rules request an enlarged space after a strong punctuation. I think this is specific to US vs. European usage.
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