CLASS variable <(options)> <variable <(options)>> </ global-options>;
The CLASS statement names the classification variables to be used as explanatory variables in the analysis. The CLASS statement must precede the MODEL statement.
The CLASS statement for SAS high-performance statistical procedures is documented in the section CLASS Statement in SAS/STAT 14.1 User's Guide: High-Performance Procedures. The HPREG procedure also supports the following global-option in the CLASS statement: