INTERLACE         231 libgd/gd_gif_in.c 		im->interlace = BitSet(buf[8], INTERLACE);
INTERLACE         238 libgd/gd_gif_in.c 					BitSet(buf[8], INTERLACE), &ZeroDataBlock);
INTERLACE         246 libgd/gd_gif_in.c 						BitSet(buf[8], INTERLACE), &ZeroDataBlock);