``Proper quotes''

Okay guys, what's the story behind the ``proper quotes''  One of my computer science professors uses them, so they must be something beyond the scope of /prog/.

„German quotes“
»German quotes (alternative)«
»Finnish quotes»
“English quotes”
«French quotes»
「Jap quotes」
『Double jap quotes』
【Jap heading】
``expert quotes''
``alternative expert quotes´´  (AKA the double graves, very powerful so don't overuse)
ˋˋsmaller alternative quotesˊˊ
usenet quotes
„proper quotes”
⁶⁶alternative proper quotes⁹⁹
₉₉improper quotes⁶⁶
♬♬ music quotes♬♬
\\ Moronic quotes ||
ʽʽsmall English quotesʼʼ
 ‘don't do this’
‶reverse expert quotes″
‷reverse tri-quotes (dangerous)‴
״small grave quotes ״
͵͵skinny improper quotesʹʹ 
ˁˁspooky quotesˀˀ
ʿʿbean quotesʾʾ

º Idiot quotes º
〔 never do this 〕
《 or this for that matter 》
〖this too〗
〘terrible〙
〚no thanks〛


Example
Now please berate me for my ˁˁintense autismˀˀ, ``faggots''.