100:00:00,630 --> 00:00:05,490So one important thing to know about working with the HTML5 Canvas, is that any time you200:00:05,500 --> 00:00:11,710draw something to the Canvas, that can be a potentially expensive operation to do, so300:00:11,720 --> 00:00:18,529there are times where you want to actually group a bunch of drawing calls together into400:00:18,540 --> 00:00:24,410