//----- linkages from Product Class to Building ------//
//
// [PREPARE] (the header declaring that the Prepare unit of this product class must be set up in the specified building.)
// Product Class = <product class code as defined in Product_Classes.DBF>
// Building = <building code as defined in Buildings.dbf>
// Customer Traffic Effect = <1 to 100> (This specifies the service firm's effect on increasing the location's customer traffic. For example, a restaurant helps attract more customers to the area.) 
//
// Example of assigning Fast Food Shop to use the Prepare Unit:
//
// [PREPARE]
// Product Class = FASTFOOD
// Building = FASTSHOP
// Customer Traffic Effect = 50 
// 
