scala.swing.ScrollPane.BarPolicy
(value: StringAdd[Value]).+(other)
(value: math.Ordered[Value]).<(that)
(value: math.Ordered[Value]).<=(that)
(value: math.Ordered[Value]).>(that)
(value: math.Ordered[Value]).>=(that)
(value: math.Ordered[Value]).compare(that)
(value: math.Ordered[Value]).compareTo(that)