This file points to 3 pairs of files of the form    "?qn*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1qnr_A	1qnr_A_sse
1qnt_A	1qnt_A_sse
1qnx_A	1qnx_A_sse