M_SOI              49 jcmarker.c     M_SOI   = 0xd8,
M_SOI              53 jdmarker.c     M_SOI   = 0xd8,
M_SOI             123 rdjpgcom.c     #define M_SOI   0xD8		/* Start Of Image (beginning of datastream) */
M_SOI             170 wrjpgcom.c     #define M_SOI   0xD8		/* Start Of Image (beginning of datastream) */