16.0.7 `glib_ps_form'
---------------------

glib_ps_form(S)
     :   It returns the PS code generated by executing S
     (experimental).
Example 0:
      glib_ps_form(quote( glib_line(0,0,100,100) ));
   Example 1:
      glib_ps_form(quote([glib_line(0,0,100,100),glib_line(100,0,0,100)]));

   References:

      `glib_tops'

