[Orgmode] how to show all subheadings of "current level +1", then all of "current level +2" etc.

[Rainer Stengele]

Hi all,

on any heading in an org file I can easily see all sub headings with C-c C-k.
Is there a possibility to easily see only the sub headings of the next level 
and nothing more?
And then all headings of the next sub level? And so on?!

Motivation:
C-c C-k can easily show far too many headings.
It would be good to be able to incrementally step into the heading tree ...


Thanks,
Rainer