diff --git a/app/assets/javascripts/Jit/graphsettings-model.js b/app/assets/javascripts/Jit/graphsettings-model.js
index 09b62e22..61ba0981 100644
--- a/app/assets/javascripts/Jit/graphsettings-model.js
+++ b/app/assets/javascripts/Jit/graphsettings-model.js
@@ -6,12 +6,24 @@
  */
 
 var MetamapsModel = new Object();
+
 MetamapsModel.embed = false;
+
+//array of all selected edges
 MetamapsModel.selectedEdges = new Array();
+
+//is any showcard open right now? which one?
 MetamapsModel.showcardInUse = null;
+
+//is the mouse hovering over an edge? which one?
+MetamapsModel.edgeHoveringOver = false;
+
+//double clicking of nodes or canvas
+MetamapsModel.lastNodeClick = 0;
 MetamapsModel.lastCanvasClick = 0;
 MetamapsModel.DOUBLE_CLICK_TOLERANCE = 300;
-MetamapsModel.edgeHoveringOver = false;
+
+//pop-up permission editors timers
 MetamapsModel.edgePermTimer1 = null;
 MetamapsModel.edgePermTimer2 = null;
 MetamapsModel.edgePermSliding = false;