builder.addLabel("Location:"); builder.nextColumn(2);
builder.add(locationCombo); builder.nextColumn(2);
builder.addLabel("k-factor:"); builder.nextColumn(2);
builder.add(kFactorField);
builder.nextLine(2);
builder.addLabel("Holes:"); builder.nextColumn(2);
builder.setColumnSpan(5);
builder.add(holesCheckBox);
builder.setColumnSpan(1);