docs: public void init(ScreenLocation itsLocation, BasePanel parentScreen, Converter fieldConverter, int iDisplayFieldDesc, String strValue, String strDesc, String strImage, String strCommand, String strToolTip)
      {
          m_strImageButton = strImage;        // Image for this button
          m_strToolTip = strToolTip;
          Converter converter = null;
          if (strValue != null)
              converter = new CheckConverter(fieldConverter, strValue, strDesc, true);
          else if (strDesc != null)
              converter = new FieldDescConverter(fieldConverter, strDesc);
          if (converter != null)
          {
              if (fieldConverter == null)
                  m_DependentConverter = converter; // Remember to remove this
              fieldConverter = converter;
          }
          super.init(itsLocation, parentScreen, fieldConverter, iDisplayFieldDesc, null);
      }