Below is a rough diagram of the tracks after the 17/18th shutdown.
Please forgive my drawing skills, and also the scale of the drawing.
                                     To East Hills
                                     |          \
                                     |           \
                                     \            \
To Arncliffe                          \            \   To Tempe/Sydney
----\----------------------------------\------------\------ Local Up
--\--\----------------------------------\------------------ Local Down
---\--\---------------------------------------------------- Main Up
----\--------\                                        /---- Main Down
              \                                      /
               \------------------------------------/
  The above shows the new points installed near Arncliffe, the
modifications done to the East Hills line last month, and also the
movement of the down Main Illawarra.
Below is a rough diagram of the tracks after the 24/25th weekend.
                                     To East Hills
                                     |          \
                                     |           \
                                     \            \
To Arncliffe                          \            \   To Tempe/Sydney
----\----------------------------------\------------\------ Local Up
--\--\----------------------------------\------------------ Local Down
---\--\---------------\    ----------------    /----------- Main Up
----\--------\         \                      /       /---- Main Down
              \         \--------------------/       /
               \------------------------------------/
 
  The above drawing shows the very interesting track config that I am
curious about. Does anyone know why this has been done?? I cannot see
any logical reason for doing this, as they have placed track in the
area that I thought would be used for the new Arncliffe North Station.
The only explanation I can give is the line has been moved temporarily
to allow some work on the station. 
  Also does anyone know if this was done during a shutdown, or were
the trains able to use the local lines during the weekend?? (I spent
most of last week and the weekend in Canberra, and Monday morning I
was suprised to see the new track)
-------------------------------------------------------
|  Ashley Wright, Sydney Australia	              |
|  ajwright@ozemail.com.au    or                      |
|  a.wright@student.canberra.edu.au                   |
|                                                     |
|  www:  http://www.ozemail.com.au/~ajwright          |            
-------------------------------------------------------