PNGInterlace      642 Magick++/lib/Magick++/Include.h   using MagickCore::PNGInterlace;
PNGInterlace     2338 coders/png.c     image->interlace=ping_interlace_method != 0 ? PNGInterlace : NoInterlace;
PNGInterlace     4193 coders/png.c               image->interlace=jng_image_interlace_method != 0 ? PNGInterlace :
PNGInterlace     1158 magick/option.c     { "PNG", PNGInterlace, UndefinedOptionFlag, MagickFalse },