Emacs ordered lists in org-mode

Question

Is it possible to create nesting ordered lists in org-mode:

1. task-1
1.1. task-1-1
1.2. task-1-2
1.2.1. task-1-2-1

With the ability to hide them with tab and attach TODO and DONE keywords? Cause it's always handy to know, how many tasks do we have to do and how many are left.

Answer 1

Yes it is, just go on and nest them, by indenting them a little bit more at each level :

* The almighty header
  - item 1
  - item 2
    - item 2.1
    - item 2.2
      - item 2.2.1
    - item 2.3
  - item 3

That's all tab-able.

For keywords and counting, I suppose you're referring to statistic cookies (see this answer).

Just add checkbokes to your list items ([ ] for todo and [X] for done), and place a counter ([/] or [%]) on the heading. Update it with C-c C-c.

 * The almighty header [1/3]
   - [X] item 1
   - [ ] item 2
     - [X] item 2.1
     - [X] item 2.2
       - [X] item 2.2.1
     - [ ] item 2.3
   - [ ] item 3

As is, it counts just the first sub-level, but you can set the org-hierarchical-todo-statistics variable if you want it differently.

As for genuine TODO keywords for list items, as far as I know, that's just a big NO : if you need them, use headers instead of lists, or inlinetasks.