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

Crossing File	Backbone Overlay
1su4_A	1su4_A_sse
1su8_A	1su8_A_sse
1sur	1sur_sse
1suu_A	1suu_A_sse