This part of ISO 9958 specifies the requirements for draughting film with a biaxially oriented polyethylene terephthalate base (commonly known as a polyester base) used as a medium for drawn and written information which it is possible to duplicate, revise and store. In addition, this part of ISO 9958 specifies the contents of the label to be affixed on the outside of the draughting film package, and gives an example of the product information which may be prepared by the manufacturer or retailer of the draughting film.