1.   There are certain things marked on that key diagram to give you clues.

2.   Well the area of search is defined on the key diagram.

3.   But you have defined the route in a particular way on the key diagram, when there was an alternative way of defining it.

4.   Er and it was felt appropriate at the time that that should be indicated on the T the key diagram to be to be helpful more than nothing else.

5.   Can you refer me to the part of the key diagram which shows the scheme for York to which you referred a moment ago?

6.   They they start and finish at the same locations, it is just a different way of getting from A to B.