This file points to 6 pairs of files of the form    "?at*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1at0	1at0_sse
1at3_A	1at3_A_sse
1ata	1ata_sse
1atg	1atg_sse
1ati_A	1ati_A_sse
1atz_A	1atz_A_sse