What are the document states and permission supported on the server?

What are the document states and permission supported on the server?

State management on the server is not limited to: 
  1. Document is read-only [document.edit=false]
  2. Document is read and write 
  3. Document is locked for editing by another user  [document.pausecollaboration=true]  

In fact, you have many more possible ways to control the permissions given with below Writer API:
https://www.zoho.com/officeplatform/integrator/api/v1/zoho-writer-co-edit-document.html#permissions 

To know more about the user permissions, please refer this link.