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In case this is an actual question, the two dots on the second o are called diaeresis and it's to tell you that letter starts a new syllable. You'll see it in words like naïve, coöperate, and reëlect and names such as Zoë and Chloë.

Somewhat rare to include in today, but stuffy publications such as the New Yorker have a style guide that requires the diaeresis.




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