On 2010\09\28 02:28, Charles Ellson wrote:
On Mon, 27 Sep 2010 23:35:24 +0100, "Graham Harrison"
wrote:

On the "Main Line" trains are usually referred to as going "up" or "down" by
the staff. However, it seems that, even "London Transport" refer to
Underground lines by their geographic direction;

First, try defining up/down on the Circle Line.

Try defining north/south/east/west on the Circle Line. ;-)