[docs] [issue13997] Clearly explain the bare minimum Python 3 users should know about Unicode

[Ezio Melotti]

Ezio Melotti added the comment:

Maybe the Unicode HOWTO could be reorganized so that it first introduces the bare minimum and then expands the concepts for whoever wants to know more?
Or should we have a "basic" and an "advanced" Unicode HOWTO?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13997>
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