The mail merge feature allows you to combine both static and dynamic content within the same control (e.g. to append some text prefix or postfix to a value obtained from a database), or even bind a control to multiple data fields at one time.
Mail merge is available for the following controls.
To embed dynamic data into a control's static content, type in data field names surrounded by [square brackets].
To learn how values formatting can be applied to the embedded data fields (e.g. for them to be treated as currency, or date-time content), refer to Change Value Formatting of Report Elements.