U+1F197 SQUARED OK

U+1F197 was added to Unicode in version 6.0 (2010). It belongs to the block Enclosed Alphanumeric Supplement in the Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script.

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+1F197 behaves as Ambiguous regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

"OK" (also spelled "okay", "ok", or "O.K.") is a word denoting approval, acceptance, agreement, assent, or acknowledgment. "OK", as an adjective, can also express acknowledgment without approval. "OK" has frequently turned up as a loanword in many other languages.

As an adjective, "OK" means "adequate", "acceptable" ("this is OK to send out"), "mediocre" often in contrast to "good" ("the food was OK"); it also functions as an adverb in this sense. As an interjection, it can denote compliance ("OK, I will do that"), or agreement ("OK, that is fine"). As a verb and noun it means "assent" ("the boss OKed the purchase" and "the boss gave his OK to the purchase"). As a versatile discourse marker (or back-channeling item), it can also be used with appropriate voice tone to show doubt or to seek confirmation ("OK?" or "Is that OK?").