<?MyInputFormat www.test.xx version = "1.23" encoding = "ISO 8859-5" ?>

Note: Switch the editor to the codepage 28595 (ISO 8859-5 Kyrillic)  to view the content in Kyrillic character
 
The coding is 1-Byte per Character, the higher code page (0x80 to 0xff) is kyrillic. c

Хотя термин «набор символов» (англ. character set, charset),
Нередко также вместо термина 
