Scrolling several charts in the same time

Dear All,

When developing strategies, usually we do comparison with the previous version. We'd like to open two charts side by side, one for new version and one for the previous version. Currently, we have to select one chart and go to some place and switch to another chart and go to the same place. If we could scroll the two charts at the same time, that will facilitates the comparison too much.

So the feature could be detailed as follows.

1. select several charts and make them associated
2. scrolling in one chart will also scrolling in others
3. or maybe draw something in one chart will also have the drawing appear in other charts

Thanks.