Letter-spacing is increased or decreased by modest (usually unnoticeable) amounts to fix these unattractive situations. If done properly, a changeover should be virtually unnoticeable to an audience. Alfredson wanted to make them very subtle and almost unnoticeable. In other cases, mutations may be harmless or phenotypically unnoticeable. Because they occur without our conscious awareness they are unnoticeable, uncontrollable, and nearly effortless. They may be so tiny as to be almost unnoticeable. However, the tail may have a few very dull, almost unnoticeable stripes. Some find that untreated dry leaf produces unnoticeable or only light effects. Though differences exist, they are almost unnoticeable to outsiders. This process does generate a small amount of unnoticeable display lag. Given the dimensions involved, this shrinkage should be practically unnoticeable. For the vast majority of users this technical situation is completely unnoticeable and irrelevant. Hence, modification in silencer elements and sequences can result in either devastating or unnoticeable changes. The fistula would later stabilise at a safe and unnoticeable size. Initially, she did very small and unnoticeable characters.