## Overview

MapSource:

Wijmaps pre-defines 3 types of bing map sources(Aerial/Road/Hybrid), you can easily set the source option to achieve it. It also allows you to use custom source just like this sample uses google map source. In order to use custom source, you should set source option to a custom source which implements IMultiScaleTileSource interface. Certainly, if you don't want anything rendered, you can set the source option to undefined.