• BOOLEAN_VAR : operations_research
• BOOLEAN_VAR_TIMES_POS_CST : operations_research
• CONST_VAR : operations_research
• CST_SUB_VAR : operations_research
• DOMAIN_INT_VAR : operations_research
• DOMAIN_INT_VAR_ADD_CST : operations_research
• INITIAL_SEARCH_SENTINEL : operations_research
• MAX_OP : operations_research
• MIN_OP : operations_research
• OPP_VAR : operations_research
• ROOT_NODE_SENTINEL : operations_research
• SOLVER_CTOR_SENTINEL : operations_research
• TRACE_VAR : operations_research
• UNSPECIFIED : operations_research
• VAR_ADD_CST : operations_research
• VAR_TIMES_POS_CST : operations_research