You can specify media attributes and values for Substrate Catalog entries.

1. In the Substrate Catalog window, select the entry that you want to edit, and click Edit or double-click the selected entry. The Substrate Catalog entry opens in the Edit window.
2. Enter information in the text fields, or click the arrow to display the drop-down menu for that attribute. Choose the new attribute setting or enter the new attribute value.
3. Click OK to save the changes.