// Copyright (c) 2005 DMTF.  All rights reserved.
   [Version ( "2.6.0" ), 
    UMLPackagePath ( "PRS::Support" ), 
    Description ( 
       "PRS_Expression defines a specific relationship between "
       "PRS_ExpressionElements associated with PRS_SolutionElements." )]
class PRS_Expression : PRS_ExpressionElement {

      [Description ( 
          "The operator to be used with the associated "
          "PRS_Expression Elements. The \'AND\', \'OR\' and \'NOT\' "
          "operators are the only operators currently defined by "
          "the standard. (They must be used as uppercase strings.) "
          "Note that this is a vendor-extensible property - so that "
          "additional operators can be defined and used in "
          "implementations." )]
   string Relation;


};
