To provide a refill on which electric data in personal computer can be easily printed by a printer, and to provide a method for binding the refill to a systemized notebook and utilizing it.

The refill previously has a crease or a perforation in the center of paper and holes for binding so that the crease or the perforation side becomes a spine. The systemized notebook to bind it has a standard size with a size obtained by two-folding the refill. A user can print electric data in a personal computer on the refill by a printer and bind it as it is to a systemized notebook, and utilize it.