Now that the two essential pieces are in place—the main document and data source—it's time to join them. To do this, you insert merge fields that reference the data source into the main document.
The most straightforward way to go is to insert individual fields, one at a time. When you insert a field, Word places a code with double angle brackets into the document, like this:
The field names come from your specific data source, so they change depending on the data source you select and might not be the same as shown in these examples.
To insert merge fields into the main document one at a time, follow these steps: