code: private void jCheckBoxDrawFinalZeroingLinesActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_jCheckBoxDrawFinalZeroingLinesActionPerformed
      {//GEN-HEADEREND:event_jCheckBoxDrawFinalZeroingLinesActionPerformed
          parent.getGraphPanelChart().getChartSettings().setDrawFinalZeroingLines(jCheckBoxDrawFinalZeroingLines.isSelected());
          refreshGraphPreview();
      }
docs: GEN-LAST:event_jCheckBoxPaintGradientActionPerformed