A check mark or tick is a mark (✓, ✔, ☑, etc.) used to indicate the concept "yes" (e.g., "yes; this has been verified", "yes; that is the correct answer", "yes; this has been completed", or "yes; this [item or option] applies to me"). The x mark is also sometimes used for this purpose (most notably on election ballot papers), but otherwise usually indicates "no", incorrectness, or failure.
As a verb, to check (off) or tick (off), means to add such a mark. Printed forms, printed documents, and computer software (see Checkbox), commonly include squares in which to place check marks.
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The "Symbol, Other" category of Unicode provides various check marks:
- U+237B ⍻ not check mark
- U+2610 ☐ ballot box
- U+2611 ☑ ballot box with check
- U+2705 ✅ white heavy check mark
- U+2713 ✓ check mark
- U+2714 ✔ heavy check mark
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