M_APP0           2156 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