key_1.mat

Unzip this file into a writeable directory. You should end up with a "Geocode" project, as well as

; @(#)key_1.mat	1.1 4/29/94 14:07:28
;
; Single element key match rules
;
VAR KeyField    1 28 S ; Key value
;
MATCH UNCERT  K1 KeyField   0.9 0.01 700.0