anchor.diff:      when is_pid(Exclude) ->
       gen_server:call(?DEFAULT_SCOPE,
                       {get_members, GroupName, Exclude},
  +                    Timeout);
  +
  +get_members(Scope, GroupName, Timeout)
  +    when is_atom(Scope) ->
  +    gen_server:call(Scope,
  +                    {get_members, GroupName},
                       Timeout).
   
   %%-------------------------------------------------------------------------
  
positive.code:     when is_pid(Exclude) ->
      gen_server:call(?DEFAULT_SCOPE,
                      {get_remote_members, GroupName, Exclude},
                      Timeout).
  
  %%-------------------------------------------------------------------------
  
negative.code:     when is_pid(Exclude) ->
      gen_server:call(?DEFAULT_SCOPE,
                      {get_local_members, GroupName, Exclude},
                      Timeout);
  
  get_local_members(Scope, GroupName, Timeout)
      when is_atom(Scope) ->
      gen_server:call(Scope,
                      {get_local_members, GroupName},
                      Timeout).
  
  %%-------------------------------------------------------------------------
  