void* gfxfontlist_getuserdata(gfxfontlist_t*list, const char*id);
void gfxfontlist_free(gfxfontlist_t*list, char deletefonts);
-void gfximage_save_jpeg(gfximage_t*img, char*filename, int quality);
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gfxbbox_t* gfxline_isrectangle(gfxline_t*_l);
gfxline_t*gfxline_makerectangle(double x1, double y1, double x2, double y2);