- Source material metadata is an advanced feature, and most users don't need to use it. Some metadata is set automatically by Atlos (e.g., "auto_archive_successful" and "content_info") while others is set by integrations. + Source material metadata is an advanced feature, and most users don't need to use it. Some metadata is set automatically by Atlos (e.g., "auto_archive_successful" and "content_info") while others are set by integrations.