diff --git a/src/js/includes/Canvas.js b/src/js/includes/Canvas.js
index 2bbca78..2265e2d 100644
--- a/src/js/includes/Canvas.js
+++ b/src/js/includes/Canvas.js
@@ -1,4 +1,5 @@
 'use strict';
+
 var config = require('./config');
 var util = require('./util');
 var ApertureHandler = require('./ApertureHandler');
@@ -11,6 +12,11 @@ var ImageDataHandler = require('./ImageDataHandler');
 
 var $document = $(document);
 
+/**
+ * Canvas is using fabric to create the canvas and initiate it with its initial settings.
+ * It is also here most of the interaction is taking place. And most files are connected to this file.
+ * Fe. getDragbars method can be called from most places as the Canvas class is available in most places.
+ */
 var Canvas = fabric.util.createClass(fabric.Canvas, {
     initialize: function (id) {
         this.callSuper('initialize', id, {
@@ -24,6 +30,8 @@ var Canvas = fabric.util.createClass(fabric.Canvas, {
             height: 600
         });
 
+        // Eventhandler for mouseup events on the whole canvas.
+        // This should be rewritten a bit to not have that many events after the image has been cropped.
         this.on('mouse:up', function () {
             if (this.getImage().__cropped && !this.get3dHandler().isEnabled()) {
                 this.getApertures().setTransparent(false);