function [bonds,components,n_vector_bonds] = rbg2abg(name,rbonds,rstrokes,rcomponents,\
				      port_coord,port_name,\
				      infofile,errorfile)

  ## ###############################################################
  ## ## Version control history
  ## ###############################################################
  ## ## $Id$
  ## ## $Log$
  ## ## Revision 1.45  1999/10/19 02:13:31  peterg
  ## ## Now assigns correct bonds to the new junction port names
  ## ##
  ## ## Revision 1.44  1999/10/19 00:05:44  peterg
  ## ## Now defaults junction ports when only one specified (for vector junctions)
  ## ##
  ## ## Revision 1.43  1999/10/18 04:08:46  peterg
  ## ## Now computes n_vector_bonds -- number apparent (maybe vector) bonds per component.
  ## ## Neeeded to vectorise junctions.
  ## ##

    signed_bond_list = nozeros(components(i,:));
    n_comp_bonds = length(signed_bond_list);
    direction = sign(signed_bond_list);
    
    ##Find the port list for this component
    if exist([comp_type, '_cause'])==0
      eval(["ABG = ",comp_type, "_abg;"]);
      if struct_contains (ABG, "portlist")
      port_list = ABG.portlist;
	port_list = ABG.portlist;
      else
	error(sprintf("Component %s has no ports", comp_type));
        port_list = [];
      endif
    else
      port_list=comp_ports(comp_type,n_comp_bonds)
    endif
    

    [n_comp_ports,m_comp_ports] = size(port_list);
    subport_list="";