18 Jun 08 12:53, Cindy Haglund wrote to TOM WALKER:

 TW>> region north of this circle is known as the Arctic, and the zone
 TW>> just to the south is called the Northern Temperate Zone.

 CH>   IIRC these man made lines and circles were designed to assist in
 CH> navigation/location. Seems it's been working ! :)

That's all well and good, but the fact is, they have to compensate for
error in their navigation when using a compass. If they're using a GPS,
those lines are perfect for the purpose intended.

                R\%/itt



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