Editing Aqua (user interface) (section)

==== Checkboxes and radio buttons ====
In macOS, empty check boxes are small, white rounded rectangles. When they are checked, they turn blue and a [[checkmark]] is present. They are essentially buttons which can be toggled on or off. Radio buttons are similar in appearance and behaviour except that they are circular and contain a dot instead of a check. Radio buttons are classed into groups of which only one can  be activated at a time.

In Yosemite, a short animation was added to show the checkbox or radio button filling in.