code: private void buttonResetToDefaultActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonResetToDefaultActionPerformed
      loadFrom(new MindMapPanelConfig(), PreferencesManager.getInstance().getPreferences());
      this.fontTextEditor = SourceTextEditor.DEFAULT_FONT;
      updateFontButton(this.buttonFontForEditor, this.fontTextEditor);
    }
docs: GEN-LAST:event_checkBoxDropShadowActionPerformed