Status = what stage it's at
Open, In Review, Answered, Closed. A property of the document.
Ball in Court = whose desk it's on
A person. The one human who has to do something next.
The same shape, three times
Read this next, in this order
1
Statuses and Ball in Court
The model itself, in two minutes. → Statuses and Ball in Court
2
Review Routing
How the ball moves, and why some reviewers are locked. → Review Routing
3
Then the three documents