conversation DDE(The interaction between two applications that are communicating and exchanging data through special functions and code known as dynamic data exchange (DDE))
champ de données dynamiques(A field that can be used in a workflow rule or template as a placeholder for specific values or text in an e-mail. When you send an e-mail, these placeholders are replaced with the data that meet the conditions that have been set in the workflow rule. For example, if you send an e-mail to an account holder about a contract cancellation date, you can use a dynamic data field to automatically find and insert the correct cancellation date for that contract)