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

Crossing File	Backbone Overlay
1qc7_A	1qc7_A_sse
1qcs_A	1qcs_A_sse
1qcx_A	1qcx_A_sse
1qcz_A	1qcz_A_sse