managing data in subpatches

Hi,

I'm trying to make my patch working as a subpatch and being able to control its data content from higher level patch. Data which I'm intrested to control its basically:

1) managing content of counter;
2) change the content of 3 Itable objects;
3) to recall presets from the Preset object, assigned only to the one particular subpatch.

It seems to me that family of pattr objects would be helpful, but how to use them its a bit difficult.
Would be grateful for help and advice.

Marcin