Checkbox

Checkbox[x]
represents a checkbox with setting x, displayed as

when x is True and

when x is False.

Checkbox[Dynamic[x]]
takes the setting to be the dynamically updated current value of x, with the value of x being toggled if the checkbox is clicked.

Checkbox[x, {val₁, val₂}]
represents a checkbox that toggles between values val₁ and val₂, and displays as

and

respectively.

Checkbox[x, {val₁, val₂, val₃, ...}]
represents a checkbox that cycles through values val_i, and displays as

for all val_i with i>2.

MORE INFORMATION

Checkbox is effectively a special case of Toggler.

The following options can be given:

Appearance	Automatic	the overall appearance of the checkbox
AutoAction	False	whether to change the checkbox automatically when the mouse is over it
BaselinePosition	Automatic	alignment relative to surrounding text
Enabled	Automatic	whether the checkbox is enabled, or grayed out
ImageMargins	0	margins around the image of the displayed checkbox