M_APP0 2146 ext/exif/exif.c #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */ M_APP0 342 ext/standard/image.c #define M_APP0 0xe0 M_APP0 59 ext/standard/iptc.c #define M_APP0 0xe0