11 wrote:
> [...] if you look at the chart for hiragana, you see that
> they left space for four new kana, just in case somebody
> decided to invent new kana. [...] I think they're
>
> 1. to make the columns come out even
> and
> 2. in case someone comes up with new letters
Both things, I think.
For new letters, see the yellow squares in:
http://www.unicode.org/charts/draftunicode32/U32-3040.pdf
http://www.unicode.org/charts/draftunicode32/U32-30A0.pdf
http://www.unicode.org/charts/draftunicode32/U32-31F0.pdf
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