What ‟ means
It opens quoted text where a style calls for it. Quotation marks grew from citation signs: around 1483/84, Francesco Filelfo consistently marked citations in print. In the sixteenth century they also marked direct speech; in the eighteenth century, forms moved toward modern punctuation.
For a Greek quote inside a quote, ‟ is a common opening mark, noted in typography commentary in 2007. Other styles use different quote patterns.
A style-specific opener; use it where the language or house style calls for it.
In German prose, it can look mis-set.
Don't confuse it with
2Questions people ask
1Why does ‟ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type ‟
‟\201FCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

