RhinoCommon: Interaction with Objects from for example VisualARQ?

I try to understand the overall architecture.
Main questions for me are how and if plugins can interact with objects created by other plugins.

Example specific to VisualARQ or Lands Design:

  1. So how is a VisualARQ wall object being implemented in VisualARQ? Is it a custom object?
  2. But if I would create a own plugin, how I can for example create a VisualARQ wall in a Rhino document from a own plugin?
  3. Is it possible to change existing VisualARQ objects and understand their attributes in the document?

Thank you!

So no-one? Maybe @fsalla ? Sounds a bit like it but I hope each plugin and all the data stored in Rhino is not “isolated” and strong vendor specific/locked.