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The "Get code" has a bug for UTF-8 characters.
I wrote a page for UTF-8 characters in the Playground Arduino Playground - UTF-8
See also the forum topic that started it : Serial.print with UTF-8 characters - Programming Questions - Arduino Forum
The example sketch was used with (:source lang=c linenum:) and (:sourceend:)
But the "Get code" translated the UTF-8 characters wrong.
For example "3µV" becomes "3µV", and after copying that into the Arduino IDE it still is "3µV".
It could be a problem of my browser that shows the text as non-UTF-8, so perhaps it might not be a "bug", but just the way it works.
For a workaround, I used the "[@" and "@]" for the code, and tried to add the utf-8.ino file as an attachment to that page.
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I can't attach a file to a page in the Playground, because a password is requested and my own password is not working.