By default show summary of cells in the bottom right corner
Like in Excel it would be nice to get an automatic summary of cells shown in the bottom right Corner (see attached file).
Value in cell A1: 20
Value in cell A2: 30
Value in cell A3: 40
When range A1:A3 is selected, the sum of those three cells should be shown in the bottom right Corner. This should be doable in reportmanager as well as in the file Manager.