email_body: Please review the attached file.
  The books listed for each trader are marked  for removal from the portfolio.
  If you are currently using one of these  books or will be using it in the future please highlight the book id in  YELLOW.
  If the book is no longer used please highlight the book id in BLUE.
  When you have finished please return the file to me.
  Thanks for your help,
  
subject_line: OutDated Book IDs
  