code: boolean doresetCheck() {
      if(!doResetCheck) {
        return false;
      }
      if(resetCheck) {
        loadIsChecked();
        paragraphsCache.removeRange(resetFrom, resetTo);
      } else if(resetParaNum >= 0 && resetParaNum != paraNum) {
        resetCheck = true;
        resetParaNum = -1;
        loadIsChecked();
        paragraphsCache.removeRange(resetFrom, resetTo);
      }
      return resetCheck;
    }
docs: Do a reset to check document again