html contenteditable attribute and all the serious limitations

The only way to implement rich text is with the html contenteditable
attribute. Google Docs doesn't use this attribute at all because it
has tons of limitations and most of the interesting Google Docs
features wouldn't be possible.

Mail is totally different. Gmail uses contenteditable for its rich
text editor and it is indeed somewhat accessible now in Firefox. But
Docs does so much more than this, it's a full document word processor
- and there isn't yet support in html or aria that standardizes this.
New specs would need to be proposed.

With this, I would like to propose new specs.

Thanks,

Kevin