docs: public void preSetupGrid(String strMenu)
      {
          Record record = this.getMainRecord();
          if (record != null)
              record.setOpenMode(record.getOpenMode() | DBConstants.OPEN_CACHE_RECORDS);    // Cache recently used records.
          if (record != null) if (record.getKeyArea().getKeyName().equals(DBConstants.PRIMARY_KEY))
              record.setKeyArea(record.getDefaultScreenKeyArea());
      }