static int showForm_defaultGap = 4;
static int showForm_gapBetweenColumns = 10;

static JPanel showFormTitled(fS title, fO... _parts) {
  JDesktopPane desktop = mainDesktopPane();
  if (desktop != null) ret showInternalFrameFormTitled(desktop, title, _parts);
  ret swing(func -> JPanel {
    final new Var<JFrame> frame;
    JPanel panel = showForm_makePanel(false, _parts);
    showForm_makeFrame(title, panel);
    frame.set(getFrame(panel));
    ret panel;
  });
}

static JPanel showForm_makePanel(Bool internalFrame, O... _parts) {
  L<JComponent> out = showForm_arrange1(showForm_makeComponents(internalFrame, _parts));
  ret vstackWithSpacing(out, showForm_defaultGap);
}

Began life as a copy of #1004442