Publication - proposal for a high level diagram

An image are often more efficient than a long discourse, so I created a diagram for helping on the discussion about the high level model of a publication. I displayed it in the WPUB Wiki, which is the proper location for experimentations. 

https://github.com/w3c/wpub/wiki/Publication---High-level-diagram <https://github.com/w3c/wpub/wiki/Publication---High-level-diagram>

It's created with LucidChart, so easy to maintain online. 
Please advise if you find it helpful, or misleading. 
 
Cordialement, 

Laurent Le Meur
CTO, EDRLab