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".