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

Crossing File Backbone Overlay
1tn3 1tn3_sse
1tnr_A 1tnr_A_sse
1tns 1tns_sse
2tnf_A 2tnf_A_sse