builder.addGridded(new JButton("Cancel"));
builder.addUnrelatedGap();
builder.addGridded(new JButton("Help"));
builder.addUnrelatedGap();
builder.addGlue();
builder.addFixed(new JButton("Copy to Clipboard"));
return wrap(builder.getPanel(),
"Demonstrates a glue (between Help and Copy),\n" +
"has related and unrelated buttons and\n" +
"a button with long label with the default margin.");