In Russian recension, the fall of the yers is fully reflected, more or less to the Russian pattern, although the terminal ъ continues to be written. The yuses are often replaced or altered in usage to the sixteenth- or seventeenth-century Russian pattern. The yat continues to be applied with greater attention to the ancient etymology than it was in nineteenth-century Russian. The letters ksi, psi, omega, ot, and izhitsa are kept, as are the letter-based denotation of numerical values, the use of stress accents, and the abbreviations or "titla" for "nomina sacra". The vocabulary and syntax, whether in scripture, liturgy, or church missives, are generally somewhat modernised in an attempt to increase comprehension. In particular, some of the ancient pronouns have been eliminated from the scripture (such as етеръ "a certain (person, etc.)" → нѣкій in the Russian recension). Many, but not all, occurrences of the imperfect tense have been replaced with the perfect. Miscellaneous other modernisations of classical formulae have taken place from time to time. For example, the opening of the Gospel of John, by tradition the first words written down by Saints Cyril and Methodius, (искони бѣаше слово) "In the beginning was the Word", were set as "искони бѣ слово" in the Ostrog Bible of Ivan Fedorov (1580/1581) and as въ началѣ бѣ слово in the Elizabethan Bible of 1751, still in use in the Russian Orthodox Church.