Snapshot of the navigation state, captured before a live data update or before the controller is disposed on focus-out, and used to restore the reader's position on the rebuilt model.
What the active trace's cursorKey returned, if it has one.
cursorKey
Per-row subplot counts plus the active subplot's layer count.
Snapshot of the navigation state, captured before a live data update or before the controller is disposed on focus-out, and used to restore the reader's position on the rebuilt model.