MFLAG
board[cbp->c_vertex].s_flags |= MFLAG << r;
bmask = (BFLAG | FFLAG | MFLAG) << r;
flags |= MFLAG;
PRINT_FLAG(flags, MFLAG, machine);
flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG);