eliminated in Russian in 1918 in favor of 0418 and 0438 (И and и),
    and don't even appear in KOI8-R. (The hypothesis that they don't appear
    in KOI8-R due to their similarity with Latin I and i is eliminated by
    their presence in KOI8-U.) I have a couple of fonts with Russian
    support that don't have the letter.
Therefore, 0406 and 0456 should be removed from or commented out of ru.orth
reviewed by: Keith Packard <keithp@keithp.com>