This file points to 6 pairs of files of the form "?ax*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)
Crossing File
Backbone Overlay
1ax4_A
1ax4_A_sse
1ax8
1ax8_sse
1axc_A
1axc_A_sse
1axh
1axh_sse
1axi_B
1axi_B_sse
1axn
1axn_sse