Kirill Grouchnikov's Blog: How to use "undocumented secret" Swing properties

How to use "undocumented secret" Swing properties: "A spurious outburst of 'undocumented secret' features of Swing keep popping up lately. The word 'undocumented' seems to imply that no official Java documentation on Sun mentions them, and it's only after hours of poring over the JDK code the authors finally distilled these gems. Let's start then?