Multi-Line Screen The MultiLine Screen is the fourth of five main charting views in QWXL 3. This new chart allows you to look at control charts for two or more variables at the same time. It is similar to the Relate screen, yet more flexible as you can view more than two variables at the same time. Control Chart Busitech’s famous colours are absent from the MultiLine Control chart in order to allow you to see the data points more clearly. As you can see from the above example, viewing more than four variables at one time can be challenging. Capability Chart The capability bars tell you which variables have more variation, helping you to pinpoint the data that may be crucial to solving a problem. Next Feature: Relate Screen