Question: The tags in the manifet file

We mark the proprietary apps as proprietay with tags in manifest files. For example: * com.getpostman.Postman/com.getpostman.Postman.yaml at master · flathub/com.getpostman.Postman · GitHub Flathub list some ass proprietay but shows them as Special License? For example: * https://flathub.org/en/apps/org.hdfgroup.HDFCompass Do we also need to mark them as special?