Some users are moving directly from SAS/OR 9.1.3 to SAS/OR 9.22. The following are some of the major enhancements that were introduced in SAS/OR 9.2:

• The MPSOUT= option directs procedures to save input problem data in an MPS-format SAS data set. The MPSOUT= option is available in the LP, NETFLOW, and OPTLP procedures.

• The IIS= option for the LP solver enables you to identify, for an infeasible linear program, constraints and variable bounds that form an irreducible infeasible set (IIS). The IIS= option is available in the OPTLP and OPTMODEL procedures.

• The value "2" for the PRINTLEVEL= option directs procedures to produce an ODS table called "ProblemStatistics" in addition to the "ProblemSummary" and "SolutionSummary" ODS tables that are produced for PRINTLEVEL=1. The PRINTLEVEL=2 option is available in the INTPOINT, OPTLP, and OPTMILP procedures.

• The %SASTOMSP macro converts data sets that are used by the CPM and PM procedures into an MDB file that is readable by Microsoft Project.

• Several call routines in the GA procedure were replaced by new call routines.

• The CLP procedure features improved algorithms for the "all-different" constraint in addition to several extensions to the edge-finder algorithm for resource-constrained scheduling.

For more information, see support.sas.com/whatsnewor92.