ABSTRACT
In the above example Q1Queue is an object, an instance of class Queue. €e method is JoinFront and Arrival is an instance of class Transaction, placed to the front of Q1Queue.
Normal is a function in module Distribution. Figure 11.1 demonstrates useful features of the VBA development environment. €e program-
mer has access to a menu of subs and functions available to the class or module being referenced. As demonstrated by examples in this and the following chapters, another advantage of modeling in the Excel/VBA environment is that many special-purpose VBA and Excel procedures may be included in the simulation program.
