Step 1: Select File -> Open,
Step 2: Choose the document which uses a template (and has editable regions)
Step 3: Click Open
Step 4: Select File -> Export -> Export Editable Regions as XML.
Step 5: In the XML dialog box, select a tag notation
Step 6: Click OK.
Step 7: Enter a name for the XML file
Step 8: Click Save.
While the document is exported, the generated XML file have the name of the Template the document is utilizing and all editable region names.