M_SOS            2163 ext/exif/exif.c #define M_SOS   0xDA    /* Start Of Scan (begins compressed data)   */
M_SOS             333 ext/standard/image.c #define M_SOS   0xDA			/* Start Of Scan (begins compressed data) */
M_SOS              58 ext/standard/iptc.c #define M_SOS   0xDA            /* Start Of Scan (begins compressed data) */