public void execute() {
      if (!isEditable() || !isEnabled()) {
        return;
      }
      int position = lastClickPoint != null ? viewToModel(lastClickPoint) : getCaretPosition();
      lastClickPoint = null;
      Document document = getDocument();
      String selectedText = getSelectedText();

      try {
        if (selectedText != null && !CommonUtil.isEmpty(selectedText)) {
          String trimmed = selectedText.trim();
          if (trimmed.startsWith("<!--") && trimmed.endsWith("-->")) {
            StringBuffer buffer = new StringBuffer(selectedText);
            int pos = buffer.indexOf("<!--");
            buffer.delete(pos, pos + 4);
            pos = buffer.lastIndexOf("-->");
            buffer.delete(pos, pos + 3);
            replaceSelection(buffer.toString());
          } else {
            String newSelection = "<!--" + selectedText + "-->";
            replaceSelection(newSelection);
          }
        } else {
          final int docLen = document.getLength();
          int fromIndex = Math.max(0, getText(0, position).lastIndexOf('\n'));
          int toIndex = getText(fromIndex + 1, docLen - position).indexOf('\n');
          toIndex = toIndex < 0 ? docLen : fromIndex + toIndex;
          String textToComment = getText(fromIndex, toIndex - fromIndex + 1);

          if (textToComment.startsWith("\n")) {
            textToComment = textToComment.substring(1);
            fromIndex++;
          }
          if (textToComment.endsWith("\n")) {
            textToComment = textToComment.substring(0, textToComment.length() - 1);
            toIndex--;
          }
          String trimmed = textToComment.trim();
          if (trimmed.startsWith("<!--") && trimmed.endsWith("-->")) {
            int pos = textToComment.lastIndexOf("-->");
            document.remove(fromIndex + pos, 3);
            pos = textToComment.indexOf("<!--");
            document.remove(fromIndex + pos, 4);
          } else {
            document.insertString(Math.min(toIndex + 1, docLen), "-->", null);
            document.insertString(fromIndex, "<!--", null);
          }
        }
      } catch (BadLocationException e1) {
        e1.printStackTrace();
      }
    }
    /** Reads the file, and sets the label and the values in the hashmap. */
    protected void setHM(String strPath, HashMap hmPnl) {
      BufferedReader reader = WFileUtil.openReadFile(strPath);
      boolean bFileEmpty = true;
      boolean bPart11Pnl = isPart11Pnl();
      boolean bDefaultFile = isDefaultFile();

      // if the file is empty, then create an empty set of textfields.
      if (reader == null) {
        // displayNewTxf("","");
        return;
      }

      String strLine = null;
      StringTokenizer strTok;

      try {
        // read the file, and create a new set of textfields,
        // with the values from the file.
        while ((strLine = reader.readLine()) != null) {
          String strLabel = "";
          String strValue = "";
          bFileEmpty = false;

          if (strLine.startsWith("#")
              || strLine.startsWith("@")
              || strLine.startsWith("%")
              || strLine.startsWith("\"@")) continue;

          if (strLine.startsWith("\"")) strTok = new StringTokenizer(strLine, "\"");
          else strTok = new StringTokenizer(strLine, File.pathSeparator + ",\n");

          if (!strTok.hasMoreTokens()) continue;

          strLabel = strTok.nextToken();

          // the format for the part11 Default file is a little different
          // only parse out the part11Dir, and don't display other defaults
          if (bPart11Pnl && bDefaultFile) {
            if (!strLabel.equalsIgnoreCase("part11Dir")) continue;
          }

          if (strTok.hasMoreTokens()) {
            while (strTok.hasMoreTokens()) {
              strValue += strTok.nextToken();
              if (strTok.hasMoreTokens()) strValue += " ";
            }
          }

          // append "/data/$name" to part11Dir
          if (bPart11Pnl && bDefaultFile && strLabel.equalsIgnoreCase("part11Dir")) {
            StringBuffer sbDir = new StringBuffer(strValue);
            if (sbDir.lastIndexOf(File.separator) < sbDir.length() - 1)
              sbDir.append(File.separator);
            sbDir.append("data" + File.separator + "$");
            sbDir.append(WGlobal.NAME);
            strValue = sbDir.toString();
          }

          // displayNewTxf(strLabel, strValue);
          if (strLabel != null && strLabel.trim().length() > 0) hmPnl.put(strLabel, strValue);
        }
        reader.close();
      } catch (Exception e) {
        Messages.writeStackTrace(e);
        // e.printStackTrace();
        Messages.postDebug(e.toString());
      }
    }