GUI -- TopoView - Implemented much of the node selection logic. (WIP)
- introduced topoSelect.js.

Change-Id: Ic843c7d8dc2249fe0cb8c33de60dce12c07aea44
diff --git a/web/gui/src/main/webapp/app/fw/svg/svgUtil.js b/web/gui/src/main/webapp/app/fw/svg/svgUtil.js
index ab56ddd..2c47d44 100644
--- a/web/gui/src/main/webapp/app/fw/svg/svgUtil.js
+++ b/web/gui/src/main/webapp/app/fw/svg/svgUtil.js
@@ -34,6 +34,7 @@
             $log = _$log_;
             fs = _fs_;
 
+            // TODO: change 'force' ref to be 'force.alpha' ref.
             function createDragBehavior(force, selectCb, atDragEnd,
                                         dragEnabled, clickEnabled) {
                 var draggedThreshold = d3.scale.linear()