well, the whole [this|that] is programmer for "this" OR "that", so I just assumed that meant that you could paste that into sources.list and it would be like (overly simplified: )
deb this deb that so if that's the problem then I can totally see that... BTW if you ever see the little pieplate sign (|) that's programmer for OR in most languages I know of, and && is AND. So if you see me doing weird notations like that, just remember that programmers rule the internet - always have, and most likely always will. One programmer isn't going to change diddly-squat, but collectively...