The PERTOLE.lng Model Project Evaluation & Review Technique/Critical Path Method View the model Download the model This model uses the Object Linking and Embedding technique of the MS Excel software to bring data into a Project Evaluation and Review Technique model. Keeping the data in a spreadsheet can reduce upkeep, help avoid errors, and is a familiar program to most people in business today. Keywords: Forecasting | Product Management | Production | Project Evaluation & Review Technique | PERT | CPM | Critical Path Method | Scheduling | Uncertainty | Steel Industry | Construction Industry