1. Create a text box.
  2. Choose Windows > Placeholders to display the Placeholders palatte.
  3. Click the Select an XML or XML File Containing a DTD button (shown below):

  4. Select an file and click Open.
  5. Drag the root element of the tree to the text box.
  6. Click Select File and open the same file again.
  7. Click the Merge Data button.
  8. Click OK.