Thank you, TarJak, for clearing (sic) that up. Couldn't resist making a funny, what with water densities etal. And you are so right about the need for randomisation. Still it would be nice if the layers were regional rather than global, but for simulating protection I'm just thrilled to find one now and then.
I do experience currents in places, usually during storms. Don't know if it's modeled on water flow or winds.
Reverie
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