When you're finished with the matrix tutorial, hop to ImageReady. We'll be doing all our animating in there. When you're there, go to Windows > Animation. Press the Duplicate Frame button. ...
So, you want to make a matrix background? Instead of having a HUGE image, set a repeating background so that visitors will hardly notice the load time.
When you're finished with the matrix tutorial, go to Image > Canvas Size. Set the canvas to double the current size. In my case, it's 300x300. Make sure you select the ...