diff --git a/src/Map.js b/src/Map.js
index 7196125..6831124 100644
--- a/src/Map.js
+++ b/src/Map.js
@@ -176,6 +176,8 @@ function newPolygon(element, positions, selectedRoom, callbackRoomSelected, call
   const color = selectedRoom === element['id'] ? 'red' : 'grey';
 
   if (element['type'] === 'C') { // Corridor
+    // TODO create two global panes: one for the coridors, and the other for the
+    // other rooms
     return <Pane style={{ zIndex: 500 }}>
       <Polygon positions={positions} key={element['id'] + color} color={'peru'} />
     </Pane>