What do the letters ï and ô mean? [duplicate]
Solution 1:
The mark over the o in rôle is a circumflex. In certain French words it can indicate a lost s, or show that the vowel is to be pronounced long. The mark over the i in coϊncidence is a dieresis, used to show that the vowel is to be pronounced separately from the previous one. They are hardly ever necessary in English, and I have not until now seen a dieresis used at all in coincidence.