Uncial Cyrillic writing which was used from the 9th century to the 14th-15th centuries as the main Cyrillic type.
David Glantz in his When Titans Clash provides an example of how the Red Army after three years of retreats, massive losses, steep learning curves, maturation and regaining the initiative identified this process of change in force structure by The 1944 Field Regulations of the Red Army, or Ustav, formalised their experiences of 1943, including the artillery and the air offensives for the ground forces.
It was invented and developed in Czechoslovakia in Výzkumný ústav bavlnářský / Cotton Research Institute in Ústí nad Orlicí in 1963.
Because of the importance of the last few days of Holy Week, and because of the joy of the Resurrection, the Typikon (Ustav) forbids, as in other festal periods, special prayers for the departed, e.g. a Panikhida, aside from funerals from Great and Holy Thursday through Thomas Sunday (a period of eleven days).