Hello, I have the following code to draw a line from a drawn clip called my_circle. I would like the line to be drawn in a window of fixed size (L = 500, H = 250) and that the content of this window moves to the left in order to make a sinusoid-shaped line appear, like a heart rate recording would. I managed to do this in AS2 with a mask and a "createEmptyMovieClip". I've been looking for many hours and I can't find it. Would you please have a solution in HTML5?