anchor.diff:                         end)),
      
      check(waitall([{n000,stopped},{n001,stopped}]),
  -         [ { ?READ,n001 }
  +         [ { ?READX,n001 }
            ]).
   
   write_go_test() ->
  
positive.code:    M = setup("-- READ TEST/GO"),
     util:unregister(n000),
  
     F18A = f18A:create(n001,n000,[read]),
  
     f18A:reset(F18A),
  
     spawn(fun() ->
              f18A:go   (F18A,wait),
  
negative.code:          [ { ?READ,n001 }
           ]).
  
  read_step_test() ->
     M = setup("-- READ TEST/STEP"),
     util:unregister(n000),
  