Boxes don't work.

<[email protected]>
Newsgroups gmane.comp.embedded.carlsbad-cubes
Message-ID <[email protected]> 
You can not set a border on a vbox or a hbox.

One might think that this is expected behavior, because the H/VBox is extended from Box which is not extended from JComponent, but rather from component.  However, the documentation for VBox/HBox says that it supports the Border tag.

Simple fix is to make H/VBox extend JPanel and set a BoxLayout on it right after calling the default constructor.
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