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

Crossing File	Backbone Overlay
1fbl	1fbl_sse
1fbr	1fbr_sse
1fbv_A	1fbv_A_sse
2fbj_H	2fbj_H_sse