Chromecast and resizing the Chromium window in realtime

I'm running Chromium under knoppix 7.7 and using the chromecast chrome extension to send a tab to the TV.

What's cool is that you can resize the browser window and it resizes the contents of what it's sending to the TV.

So if you want to zoom in on something, just resize the browser window so that it "frames" it better.