!!!Russian keyboard with Kildin letters
The keyboard is using <scroll lock> or <num lock> as modifier keys

[A. Jurjev's RuSa Keyboard|img/rusakeyb_jurev.png]

!!Jurjev's design
*Positions
**vowel glyphs with macrons are all under the respective non-modified vowel glyphs
*+modified consonant glyphs (voiceless sonorants ҏ ҋ ӆ ӊ ӎ ) are all under the respective non-modified consonant glyphs, except EN WITH HOOK ( ӈ ), the position of which is motivated by the LATIN N on the same position
**semisoft sign ( ҍ ) is under softsign ( ь ) 
**position of vowel glyphs with diaresis (semisoft ӓ ӭ ); the position of the first is motivated by the LATIN A on the same position, the second by the CYRILLIC З
**position of Cyrillic JE ( ј ) is motivated by the LATIN I on the same position
*Missing glyph
**modifier letter apostrophe is missing
*Ergonomy
**<scroll lock> or <num lock> kan be used likewise
**they are used as modifier keys (rather than as lock keys) resulting in permanent num/scroll locking-unlocking
**on a standard PC-keyboard the travel distance to these modifiers is long and additionally using Shift (for capitals) is clumsy