Life's little ironies
Fortune cookie from dinner:
Your love life will change for the better
The diaeresis is used over the second instance of a pair of vowels in some words. It denotes either a difference in emphasis or pronounciation (such as for double vowels in words like preëmptive, coöperation), or indicates that the second vowel, which might normally be silent, is instead pronounced (compare the ai in pain and naïve).source