Be aware of Dockable Document Interface

There is one feature which some of you may find tempting to try, but results may be awful.


First of all when using some of look and feels there won't be any action buttons on titlebars,

which are pretty useful in fact - letting you minimize panel to window's borders and closing the windows. This might be inconvienient, but it certainly isn't so severe problem as ui hanging when trying to drag game board out of the window to make it floating window or trying to reopen chess board window - it won't work as well (or bad rather).