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

Crossing File	Backbone Overlay
1ro2_A	1ro2_A_sse
1ro7_A	1ro7_A_sse
1roc_A	1roc_A_sse
1row_A	1row_A_sse