The wild world of the Internet includes many regions to explore, which may yield unexpected treasures in your quest for internationalization:

Internationalization

The Unicode Standard

Unicode Cyrillic Chard (PDF)

Unicode Cyrillic Supplement

Multilingual Mac

Apple Technical Note: Installable Keyboard Layouts

Cyrillization

AATSEEL - Macintosh Cyrillic Fonts & Keyboard Drivers

Classic Mac Ukrainianization Page

Russification of Macintosh

Tests

These pages will test whether the Cyrillicization of your computer has succeeded.

Slavic Cyrillic Comprehensive Unicode Test Pages

Cyrillic Test Page