Different discussions and issues are about having similar contents in different forms displayed together or available thru switching mechanism. That applies at least to:

• Same content in two languages which are to be displayed side by side
• Same content in two media type, like images and audio or images and text
• Same content in two displays like fixed-layout and reflow

We previously tried to adress that as synchronised, alternate or fallback but none worked enough to wrap all those cases up. I think we should group all those cases under a parallels contents concept allowing to author contents that could be displayed side by side or switched between.

I suggest to create a dedicated task force to, at least try to, solve that during this charter.