␆ Acknowledge
U+0006
␆
ℹ️ About
The Acknowledge (ACK) control character (U+0006) is a legacy transmission signal used in communications protocols to indicate that a message has been received without error. While it is a non-printing character, the “Control Picture” glyph ␆ (U+2406) is used in technical documentation to represent it visually.
⚠️ Note: Do not confuse with ✓ (U+2713 Check Mark) or ♠ (U+2660 Playing Card Spades).
⚡ Codes
HTML
CSS
\00006
Python
\u0006
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