SalesOrderType

The schema type for SaleOrder.  SalesOrder's  base abstract type, Order, is shared between PurchaseOrder and SalesOrder. SalesOrder is essentially an extension of PurchaseOrder, but in order to use the local-global design pattern, each of PO and SO needs to instantiate its own Header and Line elements.To do this, we factored out the PO content models, instantiated both PO and SO from Order.

Sees an order from end to end...