That’s highlighting your time point so that’s showing that you can have weekly time points and things like so it just makes it easy for you to be able to distil the chart data over a time frame and also one thing I probably should have mentioned is that I always like to annotate your charts as well, and dots appearing on charts can be related to annotation. Anytime you make a change it’s really useful to annotate it. You can do them privately or you can share them and the key thing is it means that over long time frames you can look back over specific actions that have impacted performance.