The standardized Unicode characters that best represent a checkbox are:
?, U+2610 Ballot box<br>?, U+2611 Ballot box with check<br>?, U+2612 Ballot box with X<br>
If you don't have a Unicode-safe editor you can naturally spell them as ☐ ☑ and ☒.
== See also ==
[[wp:Checkbox]] [[Fonts]] [[I18n]]
[[Category:Fonts]]