The font used to draw the button’s key equivalent.
- macOS 10.0–10.15Deprecated
The value of this property is the font object that describes the font used to draw the button's key equivalent. If the property value is
nil, the button doesn’t have a key equivalent. Setting this property redraws the button if necessary. Setting this property on a button that has no key equivalent does nothing.
Note that the default font is the same as the font used to draw the title.