When you insert fields in a document the displayed fields may be surrounded by if field codes are turned?

When field codes are turned on in a document, the displayed fields are surrounded by curly braces, indicating the underlying code that generates the content. For example, a field code for a date might appear as { DATE } when field codes are enabled. This allows users to see the actual commands that control the fields, but it can make the document look cluttered. To hide the field codes and display the fields normally, users can toggle the field code view, typically by pressing Alt + F9 in most Word processing software.