Ключевые слова: achievement, analysis, analyze, blackboard, business, chalkboard, change, chart, circle, company, concept, conceptual, curve, cycle, decline, diagram, graph, growth, illustration, introduction, life, line, management, market, marketing, mature, maturity, organization, period, phase, plan, plm, presentation, process, product, progress, rise, sale, solution, stage, step, strategy, success, symbol, system, theory, time,