The image shows a decision called Sum created using the Expression notation. The top-right corner of the image contains the Expression icon and the decision name. Below the name, there is an Add Description field with the description entered as Sum of all prime numbers < 10. A Q&A link follows the description field. The top-right corner of the image contains the Menu icon. Under the Menu icon, there is the Expand/Minimize button used to view or hide the decision logic.

The value entered in the expression field is sum(Prime Numbers).