How to link to a specific post on the wall on FB from fbml

How can I create a link to a specific post on a wall from a FBML page? Like when you have a FB notification, click on it, and only the specific post (with its comments) is shown.

If you need to manually get a direct link to one specific wall post then just click on a time label under the post (the one that says how long ago this post was made) and it would go to a separated page for this post, which url you can copy and distribute.

If you need to generate this link automatically then when you post to a wall through API it should return your post_id that you would need to compose direct link.