Excellent notes, thanks for sharing them! I've added a link to this
thread to SmartSprites website, so that others have a chance to read
> Non-repeating images which are shorter than the repeating ones could
> be in the same file, but if they're longer, then the repeating ones
> have to be duplicated to an LCM that's longer than the longest non-
> repeating image. Not impossible, but maybe not worth it.