<r>How to draw a window like window in enclosed picture? From the outside, can see that the windows are popped out rather than opened inside a thick wall, there is a platform if view from inside.<br/>
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<IMG src="https://drive.google.com/file/d/0B1UY10-kbb4YODJwcFVlNVRPcTg/view?usp=sharing"><s ...