section_path: Letters/Computer support
section_name: Computer support
paragraph_text: Computer support
  
  Computer fonts for early Cyrillic alphabets are not routinely provided. Many of the letterforms differ from those of modern Cyrillic, varied a great deal between manuscripts, and changed over time. In accordance with Unicode policy, the standard does not include letterform variations or ligatures found in manuscript sources unless they can be shown to conform to the Unicode definition of a character: this aspect is the responsibility of the typeface designer.
  
  The Unicode 5.1 standard, released on 4 April 2008, greatly improved computer support for the early Cyrillic and the modern Church Slavonic language. In Microsoft Windows, the Segoe UI user interface font is notable for having complete support for the archaic Cyrillic letters since Windows 8.