Bar Codes?

Hi, In Attain there is a new feature that allows a Bar Code to be defined for Non stock items. The help for this is “This field contains the bar code of the nonstock item. You can enter a maximum of 20 characters, both numbers and letters. If this field is filled in, the program creates a bar code cross reference the first time you enter the nonstock item on a sales order.” I can’t find a way of using the cross references to search for inventory items as standard. Does anyone know where Navision intend to take this idea?