diff --git a/js/common/view/VelocitySensorNode.js b/js/common/view/VelocitySensorNode.js
index 7a5c9578..40464df5 100644
--- a/js/common/view/VelocitySensorNode.js
+++ b/js/common/view/VelocitySensorNode.js
@@ -63,7 +63,7 @@ define( function( require ) {
     } );
     this.addChild( outerRectangle );
 
-    //second rectangle
+    // second rectangle
     var innerRectangle = new Rectangle( 2, 2, rectangleWidth - 4, rectangleHeight - 4, 10, 10, { fill: '#C5631E' } );
     this.addChild( innerRectangle );
 
diff --git a/js/flow/view/FlowScreenView.js b/js/flow/view/FlowScreenView.js
index 06519ced..3ff8fdf6 100644
--- a/js/flow/view/FlowScreenView.js
+++ b/js/flow/view/FlowScreenView.js
@@ -101,7 +101,7 @@ define( function( require ) {
       bottom: groundNode.top
     } ) );
 
-    // tools control panel
+    // Control panel with check boxes to toggle tools on the screen
     var toolsControlPanel = new FlowToolsControlPanel( flowModel, { right: this.layoutBounds.right - 7, top: 7 } );
     this.addChild( toolsControlPanel );