Controls
Checkboxes, switches, radios, selects and sliders.
Checkbox and switch
A switch takes effect immediately; a checkbox is staged until submit. If your switch needs a Save button beside it, it should have been a checkbox.
Radio
One-of-many, and it cannot be unset by clicking again. Using radios for a set the user might want to clear is the common mistake.
Select
Picks one value from a list. To run an action, use a menu.
Why
Sets a value; a menu fires actions. `items` goes to the Root as well as the options, or the closed trigger shows the raw value instead of the label.