[whatwg] Fixing undo on the Web - UndoManager and Transaction

[Ryosuke Niwa]

On Tue, Aug 30, 2011 at 11:52 AM, Ryosuke Niwa <rniwa at webkit.org> wrote:
>
>   - "must return the object implementing the UndoManager interface" should
>>   probably clarify _which_ object. There's presumably more than one
>>   object in the world implementing this interface. :-)
>>
>
> Oh, yes.  I'll clarify in the next version.
>

I've updated my document: https://rniwa.com/editing/undomanager.html

I clarified which object it should return and also moved undoManager idl
attribute from Element/Document to Node as we have agreed.

- Ryosuke