The binary files defining the wiring scheme, rule scheme or wiring/rule scheme combined are named as follows (and encoded as described in #4.7.7-8 below),
Wiring scheme: extension ``.w_s``, default file name ``my_wso.w_s``.
Rule scheme: extension ``.r_s``, default filename ``my_rso.r_s``
Combined wiring-rule scheme: extension ``.wrs``, default filename ``my_wrs.wrs``