TopOfs            261 ext/gd/libgd/gd_gif_out.c         int LeftOfs, TopOfs;
TopOfs            276 ext/gd/libgd/gd_gif_out.c         LeftOfs = TopOfs = 0;
TopOfs            377 ext/gd/libgd/gd_gif_out.c         gifPutWord( TopOfs, fp );