anchor.diff:      comp_1(N),
       comp_2(N),
       N = comp_3(lists:sort(get()), 1),
  +    ok = match_keys(get()),
       comp_4(get()),
       [] = get(),
  +    [] = erlang:get_keys(),
       [put(Key, Value) || {Key,Value} <- Previous],
       ok.
   
  
positive.code: suite() -> [{ct_hooks,[ts_install_cth]}].
  
  all() -> 
      [simple, complicated, heavy, info].
  
  groups() -> 
      [].
  
negative.code:     [];
  simple(Config) when is_list(Config) ->
      XX = get(),
      ok = match_keys(XX),
      erase(),
      L = [a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,
  	    q,r,s,t,u,v,x,y,z,'A','B','C','D'],
  