From f8fbeb526cd8dab7c3df338844144654e63354c7 Mon Sep 17 00:00:00 2001
From: Chris Malley <cmalley@pixelzoom.com>
Date: Mon, 24 Apr 2017 12:34:13 -0600
Subject: [PATCH] doc PointTool #78

---
 js/common/model/PointTool.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/js/common/model/PointTool.js b/js/common/model/PointTool.js
index 69625769..5382c5dd 100644
--- a/js/common/model/PointTool.js
+++ b/js/common/model/PointTool.js
@@ -36,6 +36,8 @@ define( function( require ) {
     this.dragBounds = dragBounds; // @public
 
     // Update when the point tool moves or the lines change.
+    // unmultilink unneeded because PointTool either exists for sim lifetime, or is owned by a Challenge that
+    // doesn't require dispose.
     Property.multilink( [ this.locationProperty, lines.lengthProperty ],
       function() {
         var line;