Synopsis

void        graphf_renderer_postscript_render_preamble
                                            (FILE *out,
                                             unsigned width,
                                             unsigned height);
void        graphf_renderer_postscript_render_postamble
                                            (FILE *out);
GraphfRenderer* graphf_renderer_postscript_new
                                            (FILE *out,
                                             double width_in_points,
                                             double height_in_points);