When using MS Excel, it's possible to edit/update a data range of a chart just dragging or moving the rectangle which covers the range. It's done in the same way one edit a formula range.
It's pretty useful when one needs to update a chart including new data. It's also useful to make a new chart which is formatted in the same way a previous and they jave in common a series (for example "time", in physics/chemistry/engineering).
1) Create new chart covering some data in a spreadsheet.
2) Add more data below.
3) Extend the chart data range to cover this new data.
1) You must enter the chart dialog to edit the series.
1) You would be able to edit the series extending the "colored" square that covers the data range.
I think this is a very good feature, which I still miss.