Model-Based Definition > Model-Based Definition > Annotation Features > Working with Annotation Features > To Pattern an Annotation Feature
  
To Pattern an Annotation Feature
You can pattern an Annotation feature only if some of its references belong to a patterned feature.
1. Select the Annotation feature in the Model Tree.
2. Click . 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.
 
* If an Annotation feature has multiple Annotation Elements, some of which reference a patterned entity and some of which reference non-patterned entities, then the Annotation Elements that do not reference the patterned entities will be duplicated but will still reference the same entities as the original Annotation Elements.
* The duplicated annotations do not overlap except for free placed note annotations.