Normally, all calculations for validations (comparison curves, see the section entitled “Load forecast analysis” below) once the forecast has been made when you select a specific series in the tree. However, if these calculations are extensive, it can take a long time to step between total series. To avoid this, you can select – before you start a forecast – which comparison curves you want to be displayed together with the forecast. All calculations are then done to be able to display all validations for the checked series while the calculations are executed at the same time. (This is not applicable if you want to compare with other series.)