Android - About box in application manager?

I was wondering does anyone know how to give an Android application an about box in the application manager?

So when a user goes to Settings > Applications > Manage Applications and clicks on an app there is an About box there that the user can click and info about the app pops up.

Like the images below?

alt text http开发者_如何学JAVA://img710.imageshack.us/img710/1638/about1l.png

alt text http://img40.imageshack.us/img40/250/about2r.png

I think it's an HTC rom only feature and you can't create it for your own applications.

Unless it's new in 2.x then I didn't even know it's there.