This file points to 5 pairs of files of the form    "?si*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1sig	1sig_sse
1sis	1sis_sse
1six_A	1six_A_sse
2sic_I	2sic_I_sse
3sil	3sil_sse