% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.6  1996/12/05 09:49:09  peterg
% %% Explicit computation of port number from string.
% %%
% %% Revision 1.5  1996/12/04 21:27:53  peterg
% %% Replaced str2num by sprintf
% %%
% %% Revision 1.4  1996/08/18  20:06:21  peter
% %% Included zero outputs.
% %%
% %% Revision 1.3  1996/08/09 14:08:04  peter

% internal indicates an internal variable
% anything else is the name of a constant.
% Blank is taken to be external
% If its a numbered port:
%     cr contains 'MTT_port'
%     arg contains port number

effort_attribute = cr;
flow_attribute = args;

if length(effort_attribute)==0
  effort_attribute = 'external';
end;

if length(flow_attribute)==0
  flow_attribute = 'external';