Reply To: marginal material Home › Forums › Braille Formats/Textbook › marginal material › Reply To: marginal material April 20, 2012 at 8:51 pm #21354 joannavenneriParticipant Sorry. Forgot to say that the time line is not considered marginal material. The think the rule on marginal material gives a comprehensive definition of the different types of marginal material. --Joanna