Choose the link decoration at the end of each link within this category. Decorations can be used to visualize the direction of relationships,  To Decoration will denote the destination of the link. 

You can choose between three To decorations:

• None: No decoration will be displayed at the link destination.
• Arrow: The link will display an arrow that points towards the target node. Can be used together with “Arrow” From Decorationto visualize bidirectional relationships.
• Circle: The link will display a circle near the target node.