etymologically though inconsistently in secular writing until the eighteenth century, and more consistently to the present day in Church Slavonic. is the Greek letter omega, identical in pronunciation to , used in secular writing until the eighteenth century, but to the present day in Church Slavonic, mostly to distinguish inflexional forms otherwise written identically. Two "yuses", "big" and "small" , used to stand for nasalized vowels and . According to linguistic reconstruction, both become irrelevant for East Slavic phonology at the beginning of the historical period, but were introduced along with the rest of the Cyrillic script. The iotated yuses, and , had largely vanished by the twelfth century. The uniotated continued to be used, etymologically, until the sixteenth century. Thereafter it was restricted to being a dominical letter in the Paschal tables. The seventeenth-century usage of and (see next note) survives in contemporary Church Slavonic, and the sounds (but not the letters) in Polish. The letter was adapted to represent the iotated in the middle or end of a word; the modern letter is an adaptation of its cursive form of the seventeenth century, enshrined by the typographical reform of 1708. Until 1708, the iotated was written at the beginning of a word. This distinction between and survives in Church Slavonic. Although it is usually stated that the letters in the table above were eliminated in the typographical reform of 1708, reality is somewhat more complex. The letters were indeed originally omitted from the sample alphabet, printed in a western-style serif font, presented in Peter's edict, along with the letters (replaced by ), , and (the diacriticized letter was also removed), but were reinstated except and under pressure from the Russian Orthodox Church in a later variant of the modern typeface (1710). Nonetheless, since 1735 the Russian Academy of Sciences began to use fonts without , , and ; however, was sometimes used again since 1758. Although praised by Western scholars and philosophers, it was criticized by clergy and many conservative scholars, who found the new standard too "Russified". Some even went as far as to refer to Peter as the Anti-Christ. Lomonosov also contributed to the Russian standard language, developing a "High Style" with high influence of Church Slavonic, which was to be used in formal situations such as religious texts; as well as "Medium Style" and "Low Style", deemed for less formal events and casual writing. Lomonosov