docs: private void excludeTemplateRange(int tPosBegin, int tPosEnd) {
          if (blockTabCnt > 0) {
              // Check whether we can extend the previous block.
              BlockTabRec btr = blockTab[blockTabCnt - 1];
              if (btr.dummy && btr.tPosEnd == tPosBegin) {
                  btr.tPosContentsEnd = tPosEnd;
                  btr.tPosEnd = tPosEnd;
                  return;
              }
          }
          int blockNo = registerBlock(null);
          BlockTabRec btr = blockTab[blockNo];
          btr.tPosBegin = tPosBegin;
          btr.tPosContentsBegin = tPosBegin;
          btr.tPosContentsEnd = tPosEnd;
          btr.tPosEnd = tPosEnd;
          btr.definitionIsOpen = false;
          btr.dummy = true;
      }