+PickButton
    +ChoButton, it is a convenience class to provide a style and a
    tooltip. See also +Tiny, +Tip, +Button, +ChoButton.
(prev @)
    
    (de prev @
       (pass get (: chart 1 data) (row -1)) )
    +PwField
    
    (gui 'pw '(+PwField) 20 "Password")
    <passwd> html tag. See also gui, +TextField
    and input fields.