This file points to 8 pairs of files of the form    "?pi*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1pi1_A	1pi1_A_sse
1pie_A	1pie_A_sse
1pii	1pii_sse
1pin_A	1pin_A_sse
1pix_A	1pix_A_sse
2pia	2pia_sse
2pii	2pii_sse
2pil	2pil_sse