Am 12.03.2011 14:36, schrieb Trevor G Quayle:

> I don;t see the issue with outside edges, as what I think of as grime tends to
> be only on interior edges or crevices; that is surface areas that are not
> exposed.

While crevices might accumulate grime, prominent edges might show the 
effects of handling; e.g. an otherwise dull and oxidized metal object 
might be polished at prominent edges (think of a brass statue). A 
proximity pattern that could account for that as well would be a good thing.

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