function structure = cbg2ese(system_name, system_type, system_cr, ...
    system_args, full_name, full_name_repetition, ...
    repetition,...
    structure, structure_file,infofilenum)
% Set up globals to count the component inputs and outputs. This relies on
% the named SS (the ports) being in the correct order. Using globals here
% avoids changing the common argument list for all _eqn files for something
% which is only used for named SS components.
global local_u_index
global local_y_index
global at_top_level

% Structure matrix [states,nonstates,inputs,outputs,zero_outputs]

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.22  1998/07/04 07:10:27  peterg
% %% Don't evaluate alias if no constitutive relationship or args and write
% %% message.
% %%
% %% Revision 1.21  1998/07/03 18:58:58  peterg
% %% Put arg alias stuff within function alias_args
% %% Called recursively to handle arithmetic expressions
% %%
% %% Revision 1.20  1998/07/03 14:39:09  peterg
% %% Added info messages a bit busy now!
% %%

  % Set up the counters for the labelled SS. These are, by definition,
  % encountered first and so the counters will not be messed up by subsystems.
  local_u_index = 0;
  local_y_index = 0;

  if (length(system_args)==0)
    mtt_info(sprintf("No arguments given so no argument aliasing done for system %s(%s)",\
     system_name,system_type), infofilenum);
  else
    eval([ "alias = ", alias_name ";"]);
  end;

  if (length(system_cr)==0)
    mtt_info(sprintf("No cr given so no cr aliasing done for system %s(%s)",\
     system_name,system_type), infofilenum);
  else
    eval([ "alias = ", alias_name ";"]);
  end;
  
  for i = 1:n_components
    comp = nozeros(components(i,:));
    bond_list = abs(comp);

    
    ports = length(bond_list);
    
    if repetitions>1
      port_pairs = ports/2;
      if round(port_pairs)~=port_pairs;
	mtt_info(['Repeated component ', comp_name, ...
	      ' has an odd number of ports - ignoring repetitions'], infofilenum);
	repetitions = 1;
      end;
    end;
    
    if repetitions>1
      odd_bonds = bond_list(1:2:ports-1);
      even_bonds = bond_list(2:2:ports);

      name_r = full_name_repetition;
      eqn_name = [comp_type, '_eqn']
      
      if exist(eqn_name)~=2 % Try a compound component
	disp('---PUSH---');
	structure = cbg2ese(comp_name, comp_type, cr, args, ...
	    full_name, full_name_repetition, ...
	    k, structure,  structure_file, infofilenum);
	
	% Link up the bonds
	fprintf(ese_file, ...
	    '\n\t%s Equations linking up subsystem %s (%s)\n\n', ...
	    pc, comp_name, comp_type);
	name_comp_name = sprintf('%s_%s_%d', ...
	    full_name_repetition, comp_name, k);