[O] plain lists folded by default

[Rémy Abergel]

Hi Org users,

do you know how to make plain lists folded by default?
Let us consider the following example :

* Section 1

  A paragraph here.

  + item 1 :: description
    some long text here
    + item 1.1 :: description comes here
      let us say that a long text comes here
    + item 1.2 :: description
      again let us say that a long text comes here.
  + item 2 :: some text

  Another paragraph here.

* Section 2


when I unfold Section 1, I get what you can see above (plain lists are 
unfolded), but I would like to get (by default) something like


* My section

  A paragraph here.

  + item 1 :: description...
  + item 2 :: some text

  Another paragraph here.

* Another section

Currently I need to manually fold the item one by one.
Eventually being able to do cycling (by pressing [TAB] several time on 
section 1 in order to fold/unfold the items) would also be nice.

Thanks,
Rémy.