...

• Related to the content type. Examples are:
  • front matter of books and journals
  • back of the book indexes
  • specific article types in journal issues:  "correction", "editorial", "introduction", "obituary", "partial-retraction", or "retraction". These types can easily be recognized by the article type attribute in the XML.
  • specific contributions to journal issues that cannot be determined by the article type attribute: 
    • Foreword
    • Publisher’s Note
    • List of Contributors / Notes on Contributors
    • Call for Papers
    • Instructions for Authors
    • In Future Issues
    • Back Issues
    • Books Received 
    • (Guest) Editors in this Volume
• Related to marketing campaigns or other promotional activities, for example the COVID-19 collection (https://www2.brill.com/COVID-19_collection)

...