function varargout = fsgui(varargin)
 
  $Id: fsgui.m,v 1.98 2003-06-22 01:22:01-05 brinkman Exp $
  (c) 2002, Peter Brinkmann (brinkman@math.uiuc.edu)
 
  fsgui: Graphical user interface for Iode's Fourier series modules
 
  Usage:
 	fig = fsgui
 			 launch GUI.
 	fsgui('callback_name', ...)
 			 invoke the named callback.
 
  Many thanks to Richard Laugesen for valuable feedback and suggestions!