[O] Extend (org-shiftcontrolup) and (org-shiftcontroldown) with numeric arguments?

[Rainer Stengele]

Hi!

I wonder if (org-shiftcontrolup) and (org-shiftcontroldown) could be
provided with the possibility to add a numeric argument.

Point on

CLOCK: [2012-12-09 So 09:00]--[2012-12-09 So 17:00] =>  8:00
                    ^

I would like to be able to change the time span to today + 7 days:

CLOCK: [2012-12-16 So 09:00]--[2012-12-16 So 17:00] =>  8:00

This could easily be done with "C-7 C-S-up", butt cannot at the moment.

Thoughts?

Cheers,
Rainer