added code comments

lib/tiles/TilesCore.js

@@ -18,6 +18,15 @@ define([
         "use strict";
         var TilesCore = function(){
 
+            /**
+             * Retrieves a tile from local store.
+             * @param image a holder for the image that is retrieved from storage.
+             * @param imageType
+             * @param url the url of the tile
+             * @param tileid a reference to the tile's unique level, row and column
+             * @param store
+             * @private
+             */
             this._getTiles = function(image,imageType,url,tileid,store){
                 store.retrieve(url, function(success, offlineTile)
                 { console.log("TILE RETURN " + success + ", " + offlineTile)
@@ -48,6 +57,14 @@ define([
                 });
             };
 
+            /**
+             * Retrieves an image from a tile url and then stores it locally.
+             * @param url The image's url
+             * @param proxyPath
+             * @param store
+             * @param callback
+             * @private
+             */
             this._storeTile= function(url,proxyPath,store,callback) // callback(success, msg)
             {
                 url = url.split("?")[0];
@@ -81,6 +98,15 @@ define([
                 req.send(null);
             };
 
+            /**
+             * Retrieves all the cells within a certain extent
+             * @param context Layer
+             * @param minLevel minimum zoom level
+             * @param maxLevel maximum zoom level
+             * @param extent Esri.Extent
+             * @param callback
+             * @private
+             */
             this._createCellsForOffline = function(context,minLevel,maxLevel,extent,callback){
                 var tilingScheme = new TilingScheme(context);
                 var cells = [];
@@ -281,6 +307,12 @@ define([
                 });
             };
 
+            /**
+             * Gets all the important bits out of the map services description page
+             * @param data The http response via f=pjson
+             * @param callback callback({initExtent,fullExtent,tileInfo,resultObj});
+             * @private
+             */
             this._parseGetTileInfo = function(data,callback){
 
                 var fixedResponse = data.replace(/\\'/g, "'");