Is the monitor to the left or to the right of the screen that is to the left of the curtain?
The monitor is to the left of the screen.
    src         edge_attr  dst
0     0    to the left of    7
1     1    to the left of    7
2     3    to the left of    7
3     6    to the left of    8
4     6  on the bottom of    7
5     7   to the right of    0
6     7   to the right of    3
7     7    to the left of   10
8     7   to the right of    1
9     8   to the right of    6
10   10   to the right of    7