Can a document file be a book? An interesting question, certainly when you bear in mind that the Dutch Book Association commission for the Best Presented Books 1971-1985 was unable to state the parameters for a book. So the answer is yes. The document file changes into a book because the contents (a loose-leaf collection of reports, minutes, publications, concepts) was copied 2000 times and perforated and then stored in the same number of document files. Then you have a book.