Is the paper different in color than the receipt?
No, both the paper and the receipt are white.
    src        edge_attr  dst
0     0  to the right of    6
1     1  to the right of    3
2     1  to the right of    2
3     1            above    7
4     1  to the right of    5
5     2        on top of    4
6     2   to the left of    1
7     3   to the left of    1
8     3        on top of    5
9     5   to the left of    1
10    6   to the left of    0
11    7            under    1
12    8        on top of    4