M_COM              77 jcmarker.c     M_COM   = 0xfe,
M_COM              81 jdmarker.c     M_COM   = 0xfe,
M_COM             128 rdjpgcom.c     #define M_COM   0xFE		/* COMment */
M_COM             173 wrjpgcom.c     #define M_COM   0xFE		/* COMment */