Unicode education in Schools

[Shriramana Sharma via Unicode]

IIUC the limitation seems to be only that functions such as "charAt" do not
recognize that surrogates aren't valid characters:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charAt
via https://stackoverflow.com/a/8716157/1503120.

This is a problem of many 32-bit char based toolkits too and doesn't
(can't?) have an efficient solution for SMP without counting the surrogates
(and checking them). Right?
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