This file points to 4 pairs of files of the form    "?c1*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1c17_M	1c17_M_sse
1c1d_A	1c1d_A_sse
1c1k_A	1c1k_A_sse
1c1y_B	1c1y_B_sse