	o  libtool versioning
	
        o  complete and extend the API programmer's manual

	o  variable arguments functions: use a simple linked list
           the output should be a series of values. For instance:

                max(15,24,8,12)
                24

           or 

                cos(1,2,3,4)
                0.999848 0.999391 0.99863 0.997564

        o  modules can be compiled in two ways:
                as effective module (to use only with spar)
                as stand alone (just a program that use this library)

	o  MathML support
