Checkbox
A checkbox is a graphical widget that allows the user to make a binary choice, i.e. a choice between one of two possible mutually exclusive options. For example, the user may have to answer 'yes' or 'no' on a simple yes/no question. Checkboxes are shown as ☐ when unchecked, or ☑ or ☒ when checked.
In Loving Memory of Square Checkbox https://tonsky.me/blog/checkbox/