What ▢ means
Its context tells you what it marks. The outline gives you a shape, not the sender’s intention; nearby wording or layout supplies that.
Why does ▢ appear in keyboard notation?
The proposal points to ▢ as a keyboard mark’s outline. ISO/IEC 9995-7 is a standard for keyboard symbols. A Unicode proposal dated 2012-09-03 describes a proposed combining enclosure—a sign drawn around a nearby letter—to show the keyboard group selected by that letter. It points to ▢ as the enclosure’s outline.
Don't confuse it with
4Questions people ask
1Is ▢ an emoji?
No. It is a text character drawn by the active font; its rounded outline is the character’s shape.
How to type ▢
▢\25A2Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

