diff --git a/Layout.js b/Layout.js
index e26ab6b..df32ec4 100644
--- a/Layout.js
+++ b/Layout.js
@@ -3,7 +3,6 @@ class Layout {
     this.graph_ = graph;
 
     this.nodes_ = [];
-    // TODO: value should be a set, not a single value, for groups
     this.nodesByPos_ = new StringMap();
     this.nodesByGraphNode_ = new Map();
     this.linksByPos_ = new StringMap();