Printing an Invoice of the Record

To Print an Invoice of the Record
- Before printing an Invoice, the user must Find the appropriate record.
- By pressing the Print button, the record currently
displayed in the interface is printed.
Example:
Suppose the user wants to print the Invoice with the Invoice Number
35792468:
- Find the Invoice with the given Invoice Number
- Press the Print button
- Press the OK button
- A copy of the current Invoice record should be generated on the
printer
- Pressing the Print All button allows the user to print
the invoices of all existing customers.
Done
