Closing grouped rows/cols

[vic]

Hi,
regarding Grouping of rows or cols, please consider this little enhancement:
Have the "-" button for closing/hiding the group at both beginning and end of the grouping-line.
Alternatively, make clicking on the group-line in the margin to close/hide the group (that is, make so that not only clicking on "-" closes the group, but also click on line itself).

Else, more mouse work. If have 2 or more subsequent groups of rows, and both are open, then you cannot close just one of them (need close all then open back the ones that need to be open with "+")