anchor.diff:      CTHooks = ct_hooks_args2opts(Args),
       EnableBuiltinHooks = get_start_opt(enable_builtin_hooks,
   				       fun([CT]) -> list_to_atom(CT);
  -					  ([]) -> true
  -				       end, true, Args),
  +					  ([]) -> undefined
  +				       end, undefined, Args),
   
       %% check flags and set corresponding application env variables
   
  
positive.code: 				       fun(EBH) when EBH == true;
  						     EBH == false ->
  					       EBH
  				       end, true, StartOpts),
  
      %% silent connections
      SilentConns = get_start_opt(silent_connections,
  
negative.code: 	       config = [],
  	       event_handlers = [],
  	       ct_hooks = [],
  	       enable_builtin_hooks,
  	       include = [],
  	       silent_connections,
  	       stylesheet,
  