When working with big Workspaces, it can be very useful to identify easily and quickly that a Metadata is used or not in the Projects.

To accomplish this, open the Preferences (Window > Preferences) and activate the 'Show used Metadata' option located under Stambia > Metadata

 Preferences

Restart the Designer, an icon is now displayed on the Metadata Nodes that are used in the Workspace:

iconUsedMetadata