Test for qx.renderer.border.Border, a cross-browser advanced border engine. Each instance of qx.renderer.border.Border allows to affect multiple QxTerminators. When the one property of the qx.renderer.border.Border change, it informs all bounded QxTerminators to rerender the border.

The qx.renderer.border.Border constructor also allows you to convert a string (css-like) into and qx.renderer.border.Border instance (last example).