operating profitoperating profit or lossoperating reportsoperating reservesoperating revenueoperating systemoperating trendoperational assetsoperational auditoperational auditingoperational expenseoperationsoperations researchoperatoroperator instructionopinion paragraphopportunity costoptimal allocation neyman allocationoptimal capital structureoptimal leveloptimal solutionoptimisticoptimistic proceduresoptimizationoptimizing modelsoptimumoptimum allocationoptimum decisionsoptimum priceoptimum solutionoptimum useoptionoption priceoptionalorder confirmationorder filling costsorder getting costsorder of statement analysisordering costordinary repairsorganisationorganizationorganization costsorganizational chartorganizersorganizingoriginaloriginal costoriginal entryoriginal estimate
