rc/mime/if

   1 .blb    application/x-blorb
   2 .blorb  application/x-blorb
   3 .gblorb application/x-blorb
   4 .glb    application/x-blorb
   5 .ifm    text/plain
   6 .ulx    application/x-glulx
   7 .z1     application/x-zmachine
   8 .z2     application/x-zmachine
   9 .z3     application/x-zmachine
  10 .z4     application/x-zmachine
  11 .z5     application/x-zmachine
  12 .z6     application/x-zmachine
  13 .z7     application/x-zmachine
  14 .z8     application/x-zmachine
  15 .zblorb application/x-blorb
  16 .zlb    application/x-blorb