%
% absorb all the .ifn fields
%
% stack: ifn-filename
%
   ofsnap exec
   empty
   "Subject" "Name" "Venue" "Iphys" "Full" "xacting" "xacter"
   "User" "xact" "Ifolder" "Shooter" "Device"
   {
    isnull ?
    dup ^"Val." _ exch \!
   } loop
   pop