This section contains examples that illustrate the options and syntax of the MILP solver in PROC OPTMODEL. Example 7.1 illustrates the use of PROC OPTMODEL to solve an employee scheduling problem. Example 7.2 discusses a multicommodity transshipment problem with fixed charges. Example 7.3 demonstrates how to warm start the MILP solver. Example 7.4 shows the solution of an instance of the traveling salesman problem in PROC OPTMODEL. Other examples of mixed integer linear programs, along with example SAS code, are given in Chapter 11.