High Quality Content by WIKIPEDIA articles! Yoficator (Russian: Ёфикатор) is a computer program or extension for a text editor that restores the Cyrillic letter Yo ‹Ё› in Russian texts in places where the letter Ye ‹Е› was used instead. The majority of newspapers and publishers use Ye in all contexts, assuming that an educated reader can distinguish which letter is meant. This creates a large number of homographs (but not homophones), and this is the problem the yoficator is intended to fix.