## Structure matrix [states,nonstates,inputs,outputs,zero_outputs]
  
  ## ###############################################################
  ## ## Version control history
  ## ###############################################################
  ## ## $Id$
  ## ## $Log$
  ## ## Revision 1.52  2004/09/12 22:27:27  geraint
  ## ## Appended 't' to fopen mode string to open in text mode.
  ## ##
  ## ## Revision 1.51  2003/05/16 11:16:28  gawthrop
  ## ## Fixed bug with multiports
  ## ##
  ## ## Revision 1.50  2003/05/08 18:47:50  gawthrop
  ## ## Fixed __ bug when using * representations
  ## ##
  ## ## Revision 1.49  2003/03/13 15:19:04  gawthrop

  ## disp("cbg2ese");
  ## system_name, system_type, full_name, repetition
  
  pc = "%";
  sub_delim = "__";		# Subsystem delimiter
  

  unit_error = "Component %s connects inconsistent ports with units %s and %s"  
  unit_info = "Component %s connects ports with units %s and %s"  
  unit_error = "Component %s connects inconsistent ports with units %s and %s";
  unit_info = "Component %s connects ports with units %s and %s";  

  ## Set up the names corresponding to the structure matrix.
  structure_name = [
		    "state        ",
		    "nonstate     ",
		    "input        ",
		    "output       ",

	    structure_change = structure_change>zeros(size(structure_change));
 	    if structure_changes>0
 	      which_indices = getindex(structure_change,1);
 	      which_indices = which_indices(:,2)';
 	      for which_index=which_indices
 	    	value = structure(which_index);
	    	value_change=value-old_structure(which_index);
	    	for k=1:value_change
		  fprintf(structure_file, ...
			  "%s\t%i\t%s\t%s%s%s\t%i\t%s\n", ...
			  structure_name(which_index,:), value-k+1, ...
			  comp_name, full_name_repetition, sub_delim, comp_name, \
			  repetition, cause2name(-comp_bonds(k,1)));
	    	endfor;
 	    	for k=1:value_change
		  if strcmp(subsystem.type,"SS") # One port, may be bicausal
		    cause_name = cause2name(-comp_bonds(1,k));
		  else		# Maybe multiport - but unicausal
		    cause_name = cause2name(-comp_bonds(k,1));
		  endif
 		  fprintf(structure_file, ...
 			  "%s\t%i\t%s\t%s%s%s\t%i\t%s\n", ...
 			  structure_name(which_index,:), value-k+1, ...
 			  comp_name, full_name_repetition, sub_delim, comp_name, \
 			  repetition, cause_name); 
 	    	endfor;
 	      endfor;
 	    endif;
	  endif
	endfor
	fflush (structure_file);

	## component interface definition