If the file array ij is smaller than the network ij, the smaller file array can be positioned somewhere on the larger array, the default is centrally. The following prompt is presented,
2d: i=36, j=36, file: i=6, j=6, enter start coords (values shown are examples)
(default 15, 15, max 30,30) i: j:
Enter the lower left 2d index, i followed by the index j to locate the filed bit pattern. If the file network size ij is bigger than the network ij, the centre of the bigger file array will be put onto the smaller network.