7) The main purpose of having a new Record File Name for a new project is to prevent duplicate barcode from happening.
8) The name of this Record File Name is followed the said Bookcode Number
9) For example, John is a graphic designer working on new book which incorporated this Bookcode system.
10) Let say the Bookcode Number is 251795546350.
11) When John working on this project and input a barcode number that already exist, this system will alert John that this barcode already been used, and ask John to input another different barcode number instead.
12) After open this Barcode Generator program, the user must enable Macro as shown in the step below so that the program inside it can be opened.