A tick, check or checkmark is a mark (✓) used to indicate the concept "yes", for example "yes, this has been verified" or "yes, I agree". Its opposite is the cross (✗), although the cross can also be positive, for example in elections.
As a verb, to tick (off) or to check (off) means to add such a mark. It is quite common, especially on printed forms, printed documents, and computers, for there to be squares in which to place ticks.
Unicode provides various related symbols, including:
| Symbol | XHTML entity | Name
|
| ✓ | ✓ | CHECK MARK (tick)
|
| ✔ | ✔ | HEAVY CHECK MARK (bold tick)
|
| ✗ | ✗ | BALLOT X (cross)
|
| ✘ | ✘ | HEAVY BALLOT X (bold cross)
|
| ☐ | ☐ | BALLOT BOX (square)
|
| ☑ | ☑ | BALLOT BOX WITH CHECK (square with tick)
|
| ☒ | ☒ | BALLOT BOX WITH X (square with cross)
|