%isocyr1; — Russian Cyrillic Character Entities
               The %isocyr1; parameter entity includes the ISO 
               character entities with the public identifier:
               
               
ISO 8879:1986//ENTITIES Russian Cyrillic//EN
ISO and the W3C are cooperating to provide an official set of character entity references for XML. A description of this set is available at http://www.w3.org/2003/entities/iso8879doc/isocyr1.html