{
  "node_BC": 4836,
  "roles": [
    "ordinary Rounded MT cumulative Flood",
    "Conquest-held MT inverse cumulative Flood",
    "2700-forward image of completed MT inverse Flood"
  ],
  "Rounded_AD2166_width": 7000,
  "civil_AD65_width": 4900,
  "difference_of_declared_widths": 2100,
  "guard": "Two separately declared coordinate displays; no new reflection or concatenated mixed-label path."
}