What 🮇 means
The fill hugs the cell's right border. It is a solid patch covering one quarter of the same-size box used for each character.
Neighboring tiles can sketch coarse pictures on that grid. Proportional fonts or extra spacing can leave gaps between them.
How did block graphics develop?
They let character-cell screens show simple pictures.
Home computers and TV teletext—the broadcast service for text-and-graphics pages—used block tiles from the 1970s onward. In its 2019 Unicode proposal, this compatibility set expanded, and the authors supplied descriptive names because vendors usually published charts, not written labels.
Don't confuse it with
4Combination ideas
1Questions 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 🮇
🮇\1FB87Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.