You can pattern an Annotation feature only if some of its references belong to a patterned feature.
2. Click
![](../model-based_definition/images/i_pattern.gif)
. This icon is available only if the selected Annotation feature has an Annotation Element with at least one reference that belongs to a patterned feature. When you click this icon, the system creates a By Reference pattern of the Annotation feature. This pattern follows the pattern of the feature referenced by the Annotation Element.